Nutter Bypass Ignition Modification???
03-28-2005, 03:54 PM
#1
Guest
Posts: n/a
Nutter Bypass Ignition Modification???
Greetings everyone,
So I'm getting ready to give this Nutter Ignition Modification a try on
my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
others had gone with the replacement ECU as suggested on the Off-Road
Jeep Tech site or if they stuck with their stock ECU?
I am also curious as to the effects of this on your fuel economy. Did
it get better or worse? I am interested in doing this more for better
fuel economy and smoother operation than I am about the power increase
it gives the Jeep.
Lastly, I do live in California and just spent 6 months getting it to
pass Smog but it did squeak by, so after I do this I plan on taking it
back to a Pre-test smog station just to get an accurate comparison of
it's affects on my smog readings. Anyhelp on how to disguise the
modification from the smog cops would be greatly appreciated as well.
Thanks in advance for your help, I'll let the group know how it turns
out.
Best,
Kevin
So I'm getting ready to give this Nutter Ignition Modification a try on
my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
others had gone with the replacement ECU as suggested on the Off-Road
Jeep Tech site or if they stuck with their stock ECU?
I am also curious as to the effects of this on your fuel economy. Did
it get better or worse? I am interested in doing this more for better
fuel economy and smoother operation than I am about the power increase
it gives the Jeep.
Lastly, I do live in California and just spent 6 months getting it to
pass Smog but it did squeak by, so after I do this I plan on taking it
back to a Pre-test smog station just to get an accurate comparison of
it's affects on my smog readings. Anyhelp on how to disguise the
modification from the smog cops would be greatly appreciated as well.
Thanks in advance for your help, I'll let the group know how it turns
out.
Best,
Kevin
03-28-2005, 03:58 PM
#2
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I just did it. I didn't notice a huge difference in mileage, but the power
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-28-2005, 03:58 PM
#3
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I just did it. I didn't notice a huge difference in mileage, but the power
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-28-2005, 03:58 PM
#4
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I just did it. I didn't notice a huge difference in mileage, but the power
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
is a lot more...I installed a header at the same time, so I can't tell you
JUSt the nutter difference, as for disguising it...it's 2 wires, just "undo"
the bypass when the time comes
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-28-2005, 05:30 PM
#5
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I did one in Massachusetts. My fuel economy has gotten much better, but I'm
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-28-2005, 05:30 PM
#6
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I did one in Massachusetts. My fuel economy has gotten much better, but I'm
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-28-2005, 05:30 PM
#7
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
I did one in Massachusetts. My fuel economy has gotten much better, but I'm
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
sure that's because I no longer need to keep the engine at 1500RPM at red
lights to keep from stalling.
I don't know if California emmissions work the same as Massachusetts, but if
they do, I doubt you'll pass. Here, they put you on a dynomometer and
measure emmissions at various speeds. That's exactly what the computer was
controlling. With the Nutter bypass, you've only got the proper mixture at
idle. Your computer used to measure the O2 sensor and lean or enrich mixture
continuously.
"Kevin" <troubledloner@netzero.net> wrote in message
news:1112043242.526340.142120@f14g2000cwb.googlegr oups.com...
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
>
03-29-2005, 09:19 AM
#8
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
The nutter is best done with 2 new wires in my opinion rather than mess
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
03-29-2005, 09:19 AM
#9
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
The nutter is best done with 2 new wires in my opinion rather than mess
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
03-29-2005, 09:19 AM
#10
Guest
Posts: n/a
Re: Nutter Bypass Ignition Modification???
The nutter is best done with 2 new wires in my opinion rather than mess
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin
inside the harness.
The connections can be mad inside the wiring loom out of sight except
for the one purple wire tag down on the ignition module that is visible
if you can get your head way down there. (unlikely to be seen)
The connections can be done with crimp plugs and sockets so it can be
reversed easy.
Gas mileage.... Well, I think I got about a 20% or so boost but I have
to use 91 octane to get that increase. So basically for an extra 6 or
$7.00 per tank fill, I get an extra 100 plus miles per tank AND a 'big'
increase in power.
I also added an Accel 'SuperCoil' to give me a nice hot spark.
Everything else is stock. If I was going to upgrade the ignition
module, I would likely go HEI.
On my last emissions test, I still got 15 ppm HC's and 0.16% CO which is
all I am tested for up here in Canada.
I also highly recommend you do this test and if needed fix before trying
to set the carb mix. It will make life much easier. The idle tubes get
plugged up easy and id clogged, the mix will change every time you start
it. The venturi cluster comes out from the top with a little twist, but
a complete carb kit is only $20.00 or so.
http://www.off-road.com/jeep/tech/engine/carter.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Kevin wrote:
>
> Greetings everyone,
>
> So I'm getting ready to give this Nutter Ignition Modification a try on
> my 1987 Wrangler I6 258 with the Carter BBD, but I was curious if
> others had gone with the replacement ECU as suggested on the Off-Road
> Jeep Tech site or if they stuck with their stock ECU?
>
> I am also curious as to the effects of this on your fuel economy. Did
> it get better or worse? I am interested in doing this more for better
> fuel economy and smoother operation than I am about the power increase
> it gives the Jeep.
>
> Lastly, I do live in California and just spent 6 months getting it to
> pass Smog but it did squeak by, so after I do this I plan on taking it
> back to a Pre-test smog station just to get an accurate comparison of
> it's affects on my smog readings. Anyhelp on how to disguise the
> modification from the smog cops would be greatly appreciated as well.
>
> Thanks in advance for your help, I'll let the group know how it turns
> out.
>
> Best,
> Kevin