ok..so i tested fuel pressure, 41 when idling, 52 when i take off the hose to the fpr, vac at 18-19.5 in....so idk, what is the fuel pressure suppose to be at? i mean im not having any drivability issues...just when im at wot at like 4500 to redline. even when i do a part throttle run just to accelerate, no knock