I installed a WOT box with two stage launch in my 04 srt4 awhile ago and it was working perfectly until just recently... when I am just driving normal or fast its running 100% but when I try and use the launch control feature thats when I have problems. It keeps putting it into limp mode so it backfires and doesnt rev over 4k. its an off and on problem it sometimes makes the check engine light flash then goes away or sometimes solid which then makes me need to reset the ecu and runs perfect again. I actually did a launch the other day with no issues... what could possibly cause this. p.s my car is pretty highly modded but stock turbo, dyno tune soon to come
you can rewire the red and black paired wires to cut just ignition alone
take them off the c101 connector and resplice that wire together then near the coil take the power wire ?green/orange asd circuit and cut it a few inches back from the coil . connect the red to the side going towards the harness side and hook the black to the side going towards the coil
ok ill try that. will cutting just spark make it like the beer rev limiter for nissan vehicles making it backfire and shoot flames because the motor loading up?
The ECU sees the 2-step as a misfire if it occurs below a certain rpm . If the misfire count gets to a certain value it will throw a code , beyond that it may be going into limp-mode .
My tires can't utilize the 2-step because of this , I can't lower rpm low enough to maintain traction without it confusing my ECU .
I have it hooked up to kill both fuel & ignition , btw , I've never tried the alternative .
ya i had it set at a really low rpm when this issue started happening then when i set it back to 4k it seemed fine. whats the lowest possible rpm you can set it before the ecu gets confused? and if i wire it to only cut ignition can i set it to any rpm?
I set my 2 step up for 4k launch. The engine light will flash sometimes and sometimes it wont. I don't like that. I have the WOT BOX with launch control. Should I try an even higher rpm?
for a long time i had it set at 1800 rpm with absolutely no issues. really u launch at 3k and actually move! what kind of tires do u have because no matter what rpm i launch i just do a burnout till third gear
I'm having this same problem, I set my WOTbox at 2200rpm and it made launching pretty easy, but as of late its setting my car in limp mode and won't rev over 4000rpm. It didn't do this at the 4500rpm stock setting, anyone know the cutoff for sure? I have a feeling I would just boil tires if I launched much higer than the 2200 its set at.