1jz speed cut

[IETV8S]

ok so i cut the pink wire...it works but my main concern is fuel....with the speed cut gone, can my computer determin the amount of fuel need properly?......or is it gonna lean itself out?....:1zhelp:

 

[tissimo]

yes, the speed cut is just a safy feature, like fuel cut

 

[IETV8S]

so then, it will be fine up to like 170 but passed that its gonna hurt the engine?

 

[tissimo]

no it wont, if your tune is fine.. Remember lots of heat is being built up on highway pulls.. If its stock ecu stock twins I dont think you'll have problem at all.

 

[annoyingrob]

You're from Calgary? Let's see some pics of your car!

 

[cbutler]

ok so i cut the pink wire...it works but my main concern is fuel....with the speed cut gone, can my computer determin the amount of fuel need properly?......or is it gonna lean itself out?....:1zhelp:

Did you notice any rough idle like I heard some people talk about? Or is the only downfall the check engine light on all the time?

 

[The Reaper]

mine never idled rough. CEL is the only only downfall

 

[bigaaron]

If you want to do it right I have a speed cut defencer in stock.

 

[annoyingrob]

CEL is the only only downfall

You want a really simple way to fix that? Feed one of the injector signals back into the speed sensor input on the ECU.

 

[Boosted1JZ89]

I'm going to pick my 1JZ in about two days. Just curious, is this the only pink wire in the ECU, or does anyone have a pinout?

 

[suprahero]

http://www.supramania.com/forums/private.php?do=showpm&pmid=406828

 

[annoyingrob]

It's the only pink wire.

 

[Rich]

You want a really simple way to fix that? Feed one of the injector signals back into the speed sensor input on the ECU.

Didn't know that. I can imagine it's a similar pulsating signal, but didn't know this would work.
I can also imagine this signal generating a speed cut if the frequency is high enough.

 

[The Reaper]

yea i didn't think that'd work either.

im not a fan of the SCD. we have shop here thats had problems with 2 or 3 of them. now that im single i hit spedd cut fairly easily lol it sux

 

[annoyingrob]

Didn't know that. I can imagine it's a similar pulsating signal, but didn't know this would work.
I can also imagine this signal generating a speed cut if the frequency is high enough.

I didn't think of it either until some guy on Toymods told me. I thought about it a bit, and thought, yeah, that would work really well.