Whats up everyone

I'm having trouble with my FD, while driving if i ease into the throttle the engine will rev up with only seeing about 1-2lbs of boost. (11.9-12.8 AFR ) how ever when i step on it, it goes lean and backfires. I suspect my tps might have gone bad but havent really found anything to support my diagnosis. Any information that will help solve this issue is appriciated.

Side note- at idle my AFR reads 12.3-12.8

The motor is pretty much stock, i've replaced the boost sensor ( the green one and the one under the upper intake mani. ) fuel pump/filter / fuel damper / pressure regulator and even sent my injectors out to be cleaned and tested.

Thanks again

 

Stock ECU or aftermarket? If aftermarket, might be acceleration fuel enrichment table is off.

 

stock ecu

 

Any chance you are going into limp mode? Checked for DTC's?