need dsm mechanic help.phoenix AZ

[larrys91talon]

own a 91 talon tsi that boosts well but isnt accelerating well even under 20psi. have 550cc,afc,fpr,no cat, k&n,stock 14b. logger will be here tues. feels like i maybe pulling timing do to knock but dont no. if anyone can help will pay thanks, let me no and i'll email u my number.

 

[divinaand_1]

This should have been put on the regional sections. as for your problem, does it hesitat when accelarating?

 

[larrys91talon]

yah, not hesitation like u can feel it wanting to go, hesitating back and forth. its no power band at all threw any rpm but im boosting fine. boost goes up quick but powers feels like a single cam non v tec in a honda thats how bad it is.plus its got a hard start at first when it sits for an hour or so if that helps.

i was told if i set my afc to -14 across the board on both high/low air map that it would make my 550ccs like my 450ccs so i did that and set the bc to 12psi and the hesitation is actually worse or feels worse from the less boost.

 

[larrys91talon]

with it set like that the narrowband reading is .94(rich) at full boost and even at -20 its at .91 with 550s and 20psi somthings wrong.