Runs great cool but runs like crap when warm

[UrN2nd]

I got a 2g auto. When I first crank it up to tune a lil. It runs pretty good pulls strong . runs through the gear all the way through the RPMs. But after a few pulls it starts to run like crap feels like it's hitting fuel cut starts redlining and 3500. Seems like the more I drive it the worse it gets. What could it be for me to drive it and the warmer it gets the worse it runs. I got no boost leaks.

16g
Fmic
Apexi bov
255
Afpr
Fic 950cc
Dsmlink v2

 

[Dxc545]

could be heatsoak or the ecu pulling timing from the maf heat reading. I've noticed the same thing especially during the summer

 

[UrN2nd]

It will do it at 10 psi as well and it will get so bad that I won't even be able to boost. Full throttle will just stutter and mis at 2000-2500. I've tried 3 sets of plugs. Now running brand new NGK 7es all gapped to .28 this last set gapped to .25. Tried 2 different stock maf I'm running an evo 8 fmic. On the dsmlink I'll look at the timing. But how would I go about fixing it if the ecu is pulling time? If I adjust my timing table wouldn't that mess it up when it's cooled down?

 

[Dxc545]

Sounds like you have a sensor issue or a leak. Does the log show knock?

 

[Dsmkauai]

Can you post a log for us? Might help us spot the problem? What are your temps at once you do a few pulls? Have you done a blt yet?

 

[UrN2nd]

I'll check temps around lunch. Yes I did 2 blt only found my bov leaking at 28 psi so I tightened the adjustment and it stopped. Pcv valve leaks a lil at 18 picking on up today but problem even happens ar stock boost

 

[pearl4gtsi]

I would check for knock and physically check the sensor itself.

 

[UrN2nd]

I'm getting a lot in knock threshold but what would I log to watch for knock. Knock raw?

 

[TalonSpeed]

Without a log or a wideband, this is like looking for flight 370......bunch of guessing.

 

[1G Eclipse94928]

LOG EVERYTHING. . They have a vid that is about this on ecmtuners.

 

[Dsmkauai]

You want to log knock retard, that will show you how much knock the ecu is seeing. Have you checked base fuel pressure? Have you checked base timing?

 

[UrN2nd]

Ok it's still cutting out so I swapped the stock ecu back into it. Same thing. Base fuel is 43.5

 

[UrN2nd]

heres a log of whats ts doing.

 

[UrN2nd]

Ok guys I think I found a significant problem with the Car today took it for a test run and then whenever I got back after it started stuttering n messing up I sat in the Car n Played around on link for a while started hearing the fuel pump make a few noises and fluctuating up-and-down on it's own got Out took a look at the fuel pressure gauge and it was bouncing between 0-3 psi. My pump is still whining. It's got 3/4 of a tank and a clean serviceable fuel lab hi flow filter. My fuel pump soc filter maybe? Afpr? Or is my 255 junk? The guy I got it from ran e85 with it.