Quote:
Originally Posted by TopgunZ
What are you mods? How are you making almost 13psi with my kit? The only thing I can think of is that you have a restriction in your exhaust somewhere therefore creating too much backpressure which is exactly how boost is measured.
Do you have stock cats? Free flow exhaust?
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Well, I'm making 12.3 psi boost. Stock pulley, Motordyne LTH, Helmholtz test pipes, Motordyne exhaust. Seems pretty high. Eugene says Im at 77% duty cycle on pump gas on my Walbro 480/1050cc combo which was supposed to already be an upgrade pump wise just to be safe. We need to check fuel pressure under boost. So, plenty of boost, but no room for E85 at this duty cycle.