michaelp Posted April 30, 2010 Share Posted April 30, 2010 So my Z detonates under boost. Checking fuel pressure, it can do 30psi idle, 37psi 0"Hg/psi, and at 3psi of boost it was pulling 42psi but detonating! I checked fuel volume, and it does 67LPH at 30psi and 87LPH at 40psi...has anyone done a volume test on the stock pump before? These numbers seem a little low to me :-\ I have a Walbro 255 to go in regardless, but I'm curious what others think about those volume numbers. Quote Link to comment Share on other sites More sharing options...
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