I started tuning my motor with tuner pro rt, my combo is in sig. i have most of the part throttle sorted out but i still have a stumble right on throttle tip in and while quickly revving it up. Ive added ALOT of AE fuel, but my scanner still shows it going lean. how much AE do i need?

Im also having a problem getting enough fuel in the motor. I have the VE chart maxed out at 99% from 4500 rpm and up. My o2 mv are only 760, i want 850 at WOT. what other ways are there to add fuel? I still have the stock fuel pump (i know its not a good idea and changing it soon) and i know this motors making a good 450hp, could that be my problem?

 

try putting bigger incjetors, changing to 255l/hr fuel pump and rise presure on fuel rail.

 

30# injectors, 47psi w/vaccuum connected. the fuel pump shouldnt be an issue while revving it up in park

 

one another thing you can do if useing any piggy-back or standalone is to extend time of injector time open

best regards

 

Definately your fuel pump. I installed the large Accell pump in my tank. PITA getting the tank out but in the end a nice set up.

 

i was wondering how you know its making 450 hp?

 

Post #15
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