SOHC Fuel Cut - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KiDyNomiTe · 11-18-2003, 11:01 AM

Ok so has anyone out there ever succesfully removed the SOHC fuel cut at 112 (or whatever it reads on your cars).

Don't tell me look in the FAQ, cuz that is for DOHC. Tried it and only thing it got me was changed my standard limiter to a fuel cut (so anytime I hit the limiter I get no fuel for a few seconds

), and it also gave me a new limiter/fuel cut in 3rd fourth and 5th that changes every now and then (can't get over ~90mph).

However the gear sensor removal worked fine (regular rev limits in 4th and 5th).

So now if anyone out there has done it, which wire did you cut. And did it let you go past the limiter while keeping the speedo intact, or does it just keep going with no speedo?

Or if you have the ECU wiring diagram from an SOHC that would help.

knightrider · 11-18-2003, 07:26 PM

i got a jwt ecu

and ive been upto about 150. so i think its gone

onevia519 · 11-18-2003, 08:07 PM

you put a switch on the wire that goes to the fuel cut, and when you wind up to about 100, you flip the switch and its temporaily off, the problem with leaving the switch on tall the time is that the ecu will eventually trip a code

andrave · 11-18-2003, 09:38 PM

and you have done this with success?
I have a sohc and I never really felt it necessary to go above 117 or whatever, but It'd be fun to try it sometime.

which wire is that?

knightrider · 11-18-2003, 10:03 PM

the absence of a speed cut is nice for those 2 hour trips to vegas

TUnity2 · 11-19-2003, 07:35 AM

Yeah, i was about to say, the fuel cuts nto 112, i believe i have done about 117 in my coupe.

andrave · 11-19-2003, 10:21 AM

so which wire is it?
I'll try this once it quits raining...

KiDyNomiTe · 11-19-2003, 11:19 AM

The speed cut is anywhere from 111-118, stock speedo sucks, mine says 112.

Hmm is there no other way cuz I don't feel like wiring a switch, its something I would only do if I take long trips to different states or something.

11-18-2003, 11:01 AM	#1
KiDyNomiTe Post Whore! Join Date: Mar 2002 Location: Chicago Age: 38 Posts: 6,296 Trader Rating: (0) Rides Gallery: KiDyNomiTe Feedback Score: 0 reviews	SOHC Fuel Cut Ok so has anyone out there ever succesfully removed the SOHC fuel cut at 112 (or whatever it reads on your cars). Don't tell me look in the FAQ, cuz that is for DOHC. Tried it and only thing it got me was changed my standard limiter to a fuel cut (so anytime I hit the limiter I get no fuel for a few seconds ), and it also gave me a new limiter/fuel cut in 3rd fourth and 5th that changes every now and then (can't get over ~90mph). However the gear sensor removal worked fine (regular rev limits in 4th and 5th). So now if anyone out there has done it, which wire did you cut. And did it let you go past the limiter while keeping the speedo intact, or does it just keep going with no speedo? Or if you have the ECU wiring diagram from an SOHC that would help. __________________ PROCEED Grip Gambler

11-18-2003, 07:26 PM	#2
knightrider Zilvia Addict Join Date: Jan 2003 Location: san diego Age: 41 Posts: 618 Trader Rating: (0) Feedback Score: 0 reviews	i got a jwt ecu and ive been upto about 150. so i think its gone __________________ Drift_ Into A Mountain Jim Wolf Technology Stock CA18DET-SR T25-greddy FMIC-JWT SR Lightened FLywheel-300zxTTclutch-SR20DET JWT tuned Ecu

11-18-2003, 10:03 PM	#5
knightrider Zilvia Addict Join Date: Jan 2003 Location: san diego Age: 41 Posts: 618 Trader Rating: (0) Feedback Score: 0 reviews	the absence of a speed cut is nice for those 2 hour trips to vegas __________________ Drift_ Into A Mountain Jim Wolf Technology Stock CA18DET-SR T25-greddy FMIC-JWT SR Lightened FLywheel-300zxTTclutch-SR20DET JWT tuned Ecu

11-19-2003, 11:19 AM	#8
KiDyNomiTe Post Whore! Join Date: Mar 2002 Location: Chicago Age: 38 Posts: 6,296 Trader Rating: (0) Rides Gallery: KiDyNomiTe Feedback Score: 0 reviews	The speed cut is anywhere from 111-118, stock speedo sucks, mine says 112. Hmm is there no other way cuz I don't feel like wiring a switch, its something I would only do if I take long trips to different states or something. __________________ PROCEED Grip Gambler

11-18-2003, 08:07 PM	#3
onevia519 Leaky Injector Join Date: Jul 2003 Location: ontario Posts: 102 Trader Rating: (0) Feedback Score: 0 reviews	you put a switch on the wire that goes to the fuel cut, and when you wind up to about 100, you flip the switch and its temporaily off, the problem with leaving the switch on tall the time is that the ecu will eventually trip a code

11-18-2003, 09:38 PM	#4
andrave BANNED Join Date: Apr 2002 Location: Burton WV Posts: 2,350 Trader Rating: (0) Feedback Score: 0 reviews	and you have done this with success? I have a sohc and I never really felt it necessary to go above 117 or whatever, but It'd be fun to try it sometime. which wire is that?

11-19-2003, 07:35 AM	#6
TUnity2 Zilvia Junkie Join Date: Sep 2003 Location: Chalmette, la Posts: 511 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, i was about to say, the fuel cuts nto 112, i believe i have done about 117 in my coupe.

11-19-2003, 10:21 AM	#7
andrave BANNED Join Date: Apr 2002 Location: Burton WV Posts: 2,350 Trader Rating: (0) Feedback Score: 0 reviews	so which wire is it? I'll try this once it quits raining...