hesitation problems popping

[blackstallion]

I am pretty sure i have a fuel problem but this problem also resembles a maf problem my car hesitates like a but then pulls real good when i floor it pulls good then it starts to go very lean my scan tool shows 0.69mv when i first floor it and the alky comes in 02's read 900 normal then it goes to 840 in the next frame then i feel it sputter next frame 0.69mv on the 02!how can it go so lean with a frame.I checked maf frequency in hertz at idle readings were normal check map sensor voltages ok checked tps voltage is good 0.54 at idle goes to 4.5 at wot reads between 215-240 grams per second at the maf I have 1 code lean exhuast at idle but i have always had that code only came on when idiling for long periods of time went to the track with that code check engine would only come on when idling for a long time changed fuel strainer at fuel filter car has a gmc syclone 92 turbo fuel pump about 8 months i also have alky kit,3 inch single exhuast,kenne bell 9006 chip,kn homemade cold air,we-4 ran 13.2 @107mph 2.3 60ft. on street tires 91octane 21 psi.Could it be the maf?

 

[y-hate]

When was the last time you check or changed your 02 sensor? tps .46

 

[turbot2496]

Sounds like your running out of fuel on top. Have you checked your fuel pressure? Fuel pump hotwired? Did this just start out of the blue or after changing something?

 

[turbot2496]

Also try turning down the boost.