Ok i put a fuel pressure regulator on the car and began to do the tuning of it. I got the pressure regulator tuned to 44 psi and that seems to be where it's makin the most power.Now here's the problem the same day i cleaned out the throttle body with carb cleaner then put it back on. Now the idle is bouncing intermitantly between 800-900. I think the IAC valve might be actin up. The SES code that i got was that the right and left banks were running lean. Now here's the question.IS the fuel pressure really to low and setting it off or is the IAC valve screwing with the A/F ratio and causin it to set off the code.

 

It's probably your IAC. You shouldn't use carburetor cleaner, as it's designed to work with, yep, carburetors. Most fuel injection components have an anti-carbon coating on them, and carb cleaner can be caustic to this coating. You should use fuel injection cleaner instead.