Took the car out for a drive with a new chip from modern muscle.Did a wot blast,check the scanmaster and it read 816 millivolts with 0.03 knock.My fuel pressure is at 43lbs line off.Should I turn the pressure down to lean it out a bit to get the millivolts down to the .77 to.80 range or leave well enough alone.I have a street chip set with 100 octane (sunoco). dunno