DET swapped P11 problems...
Ok... I have a DET swapped P11 running a nistune daughterboard. The car has been running great and I noticed a week or so ago when I'd get close to boost the temp gauge would slow drop and once I let off it would go back to normal. Idk if this has anything to do with the real problem or not lol. Sooo, the other day I was getting on the highway and around half throttle (getting ready to hit boost) the car just stumbled and wouldn't boost. I slowly got up to speed and tried to give enough throttle to get into boost and it stumbled again. I get off the highway and the engine stalls as I come to a stop. I tried restarting and nothing. After my basketball game we go back to the car and it eventually starts but doesn't really want to idle on its own. I was able to limp it to my buddies house close by.
We've swapped mafs, no change (z32). Pressure tested the system, no change. No vac leaks. Swapped Ecu's (nistune to jwt tuned for my mods), no change. Pulled the injectors (sti injectors) no leaks. FPR appears to be functioning normally, fuel pressure is where it should be. We've tightened up/repaired some shotty grounds, no change. Pulling the plug wires didn't change the "miss" while revving. Pulled the plugs and they looked fine, after checking them again tonight they are turning pretty black (as expected at this point)
Once the car does start it will sort of idle, under load the engine will cutout/studder/stumble/loadup/run rich as sh*t. Idk what to do at this point, I'm running out of ideas as are my friends helping. Any ideas or suggestions would be greatly appreciated!
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