1JZ-GTE - CT-12 Wastegates
- Thread starter Chambers
- Start date
Definitely fuel cut on a 1j you have there NC. Colder temperatures are why I had to take off the boost controller when it got colder. Even with just a y-pipe and exhaust, my car hits 15-17 psi when the ambient temps start dropping below 30°F. Try restricting the exhaust just a bit if it's easy enough for you, that should help for now.
dammit i just hit it again! Guy in a s2000 got on highway and zooms by me. I leisurely caught up to and sat behind him, he guns it and i accelerate, I was basically waiting for him to go so I didnt rearend him, hah! I was just about to drop the hammer after he finally got some speed and then bam, fuel cut. I let him go and exited the highway. Funny thing is, it only seems to happen under a slow, steady acceleration. When I put my foot into it and really get on it, it pulls hard and wont hit the fuel cut, strange right? Yeah I think I am going to throw the cat back on later this week.
i have a aem tru boost. i run at 14.6 psi all day long never hits cut. but if i try for 14.8 lol i hit cut. i have set the tru boost to open wastgate up at 15psi just incase i get a spike. i am going to wire out the fuel cut soon. but for now i have to deal with it
hmm would hooking up an electronic boost controller and only hitting about 9lbs of boost be a boost leak or could it be caused by weak waste gate springs? I haven't even reached fuelcut and I turned the duty cycle from 50-70 and it made absolutely no difference. I've checked for boost leaks through my FMIC but I think it might be from the of the old rubber connectors off the intake piping. But I haven't even tried to shim the wastegates. My turbo's are also Albert's steel rebuilds so I know their functioning correctly.
oh and stock boost has no loss but pushing more boost would show a sign of a leak?
oh and stock boost has no loss but pushing more boost would show a sign of a leak?