Is anyone running a aftermarket one? I have a universal Mallory that I retained from my last VR but I am reluctant to put it on. On a N/A vehicle will I notice a difference. I currently have a y-pipe, high flow cat to cat back exhaust, 00VI intake and a JWT cone filter. If so, what would the ideal PSI be set at? I really wouldn't want to lean out the car altought the base PSI on this regulator is at a minimum of 28 psi. Thanks.

 

the only way to properly adjust your fuel pressure is to use a wideband to see what your A/F ratio is and then raise/lower FP to acheve the ideal ratio IE around 13:1 for NA