Diablo not tunning my car!

[ocsrt4]

I have tried the srt forums and i cant get any help. I put the 93oct tune on and it was working great so i decided to turn up the boost. So i was running at about 12.0 afr so then i tried to give it more fuel and it didnt and im still running from 12 to 12.4 afrs( Not Good). My mods are 3 in downpipe to 3in straight pip to the ground, k&n drop in filter, agp wastegate holding 15psi and the diablo. Any ideas of whats going on?

[sfla_srt4]

your probably running out of fuel up top... Put the boost lower, or get more fuel.

[28patrick28]

i would also buy a walbro 255 fuel pump. Since i have this fuel pump, i can hold more boost with near -1.0 afr. Rewire the fuel pump with 14-16 ga wire, gonna make you -0.5 richer on afr too. Other option will be stg2 injector, but need a custom tune to rescale your injector duty cycle.

Btw, i hope you check your afr with a wideband, not inside the diablo datalog, Because is only a commanded afr, and it not accurate at all. I did the test ...

[ocsrt4]

I have an autometer wideband so i can watch my afrs. Ill have to do the rewire this weekend ... thanks!