600supersport
09-23-2012, 07:45 PM
'95 240sx se with redtop sr20det, z32 MAF, hks ssqv recirculated, greddy IC, koyo rad, dual electric fans, NGK bkr7e gapped .028, kinugawa td06 20g, hks WG, megan exhaust manifold, stock intake manifold/TB, stock internals With rocker arm stoppers, halman manual boost controller, walbro 255, nismo FPR 42psi, new five-0 750cc injectors, new 300zx fuel filter, ROM tune, AEM wideband and boost gauge, no A/C, with power steering, timing set to stock, new alternator/battery.
all vac lines are zip tied along with a smoke test showing NO leaks. recently changed both coolant temp sensors working fine. idk if the IACV can be tweaked, but i haven't touched it beyond some carb cleaner into the TB. i recently changed to this turbo, injectors and re-tune setup.
after swap on cold starts the car might take a couple seconds to turn over, but then idles between 14-15.5 for a few seconds, over 5-10 more seconds it climbs richer to 11 for a few seconds then another 5-10 seconds goes all the way to 17-18 and stays and kinda stutters every few seconds. the car cruises seemingly smooth between 13-16, WOT between 10.5-11.5 and pulls strong at 18psi. idle vacuum around 18-20 i believe, cruising off throttle vacuum up to 24. i can't hear the BOV at 1-2 psi like before, but it's definitely going off over 3-5psi now.
If i don't let the car warm up and drive too soon it might stall when i go into neutral. if i turn on the rear defroster it raises the idle a little from 800 to 900 and it idles a little smoother. this happened before the recently upgrades, but it previously idled between 14-16 AFRs. so idk if that's a related electrical gremlin i need to hunt down or part of my issue.
tell me the, "you're an idiot, check this, by doing this and i bet it's fine" advice, i dont care. im out of ideas. i thought it was a matter of the tuner just adding fuel at idle, but i dont really know how tuning works and im waiting to hear back if he has any resolutions.
all vac lines are zip tied along with a smoke test showing NO leaks. recently changed both coolant temp sensors working fine. idk if the IACV can be tweaked, but i haven't touched it beyond some carb cleaner into the TB. i recently changed to this turbo, injectors and re-tune setup.
after swap on cold starts the car might take a couple seconds to turn over, but then idles between 14-15.5 for a few seconds, over 5-10 more seconds it climbs richer to 11 for a few seconds then another 5-10 seconds goes all the way to 17-18 and stays and kinda stutters every few seconds. the car cruises seemingly smooth between 13-16, WOT between 10.5-11.5 and pulls strong at 18psi. idle vacuum around 18-20 i believe, cruising off throttle vacuum up to 24. i can't hear the BOV at 1-2 psi like before, but it's definitely going off over 3-5psi now.
If i don't let the car warm up and drive too soon it might stall when i go into neutral. if i turn on the rear defroster it raises the idle a little from 800 to 900 and it idles a little smoother. this happened before the recently upgrades, but it previously idled between 14-16 AFRs. so idk if that's a related electrical gremlin i need to hunt down or part of my issue.
tell me the, "you're an idiot, check this, by doing this and i bet it's fine" advice, i dont care. im out of ideas. i thought it was a matter of the tuner just adding fuel at idle, but i dont really know how tuning works and im waiting to hear back if he has any resolutions.