Im using 36lb SVO's and I just checked my fuel pressure to be 50 psi with the vacuum line not attached. Its not an adjustable regulator so I cant bring it down any...

If is use this equation...

new pressure = sqrt(new pressure/old pressure)* old rating

I get that the constant should be 40.65....
Does this sound right?

I have the constant at 39 right now and the car is very rich at idle and while driving...

 

the math looks right..
by changing the inj const to 40.65 (+1.65lbs)
the BPW (base pulse width) is shorter..

also scale your inj offsets(make sure they are stock to start with) by 1.20 (20%) or 1.40(40%),depending on whice works better for you.. im using 1.40..

also if you descreened or ported your maf scale them too, i descreened and scaled my MAF tables by 20%


that should get you in the right direction, HTH

 

I never thought about changing the offsets...Ill have to try that. Thanks for the info!