hiya guys is this only adjusted on the electro pressure regulator or are there other ways of doing it?

as a rough guide what co levals do you guys run for 17-18psi i reckon my car is already set up to run hi boost but i have no history on the car and cant afford a rolling road session to find out.

My exhaust is black with soot and im running 14psi and the car was running 18psi when i first got it.

Im hoping i can get a co reading done by a mate so that will give me a rough idea as to what fuel mods have been done, as you can only adjust the fueling for the whole rev range so ive heard?

So if you guys say i need the co leval at 4.00 for 18psi i could get him to do this if mine is under.


Thanks Paul.