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Lean conditions at 4K RPMS

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PIPOS

Probationary Member
15
0
Feb 17, 2005
brooklyn, New York
Hey Guys and Girls, I need some help

I have a problem when I try to accelerate. As you could see in the second log i barely pass 4000 rpms. And Im not steping on it, Not WOT. Its about 40% throttle. When I reach that point my wideband gets really lean (18- 20) and the car feels like its breaking a spark.

Does any body have an idea what it could be or what I should look for. Idle and cruising seem fine, but its when I accelerate. Cant pass 4K RPMS. Im scared to go WOT.

Any suggestion??

Sorry the log is saved from DSMLINK, probably some of you cant see it.

2G with 6 Bolt motor
Evo 3 16G
3" Exhaust with no cat
190 Walboro Fuel Pump
FIC 650 Injectors

Thanks
 

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