Hope somebody can shed some light on a problem with my af's.
Stock 2005 Avalanche 5.3 with 44# injectors running @ 6-11psi af's are great at either boost level when just cruising but as soon as you crack the gas even half throttle my af's go past 10 therefore I am experiencing bogging.
I have a Nelson tune that was redone to try to correct this but still no luck and Allen says it should be running way leaner the way he has it programmed.

Any thoughts.

Thanks Brad

 

First of all, welcome to PT.net

Your best bet is to get up on a dyno and tune. Mail order is fine but when FI a dyno cant be beat for fine tuning. A street tune can be a close second.
Whare are you located??

 

Hi thx
I am on Vancouver Island Canada just above Seattle ,thats the problem only 1 dyno in town and nobody able to tune GM comps .

 

It might be worthwhile for you to purchase tuning software and have a go of it yourself. Both HPTuners and EFILive are both sponsors with great customer service.

 

I think youre right I was thinking tha myself

 

I can help you out if you wanted to go with EFILive, checkout the links in my sig for the combo specials we have right now. Let me know if you have any questions.