Quote:
Originally Posted by sweetbmxrider
do you have an adjustable fuel pressure regulator? 58mm throttle body?
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Good thoughts but I would recommend verifying the air/fuel ratio with a wideband before making significant changes to the fuel pressure. If you know the fuel pressure is way off per the GM recommended spec (or tuner spec) then a small tweak probably doesn't hurt. I guess you can say I'm a safety nut when it comes to adjusting things like that without the proper devices to verify the change was correct.