high load

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    Fuel Weird ping at high RPM/ high load

    Hey everyone, this'll be my second post to the forum (and probably not the last). Anyway, I've got a pinging sound coming from my 2002 gt's engine ONLY after peak torque in 3rd/4th gear WOT (5spd manual). I observe my fuel pressure going down by about 4psi (totaling 36psi) every time this...