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Sutherland, IA | Chad, the fuel pressure relief valve only pops if your running too much pressure in the rails. Typically on LLY's when your running a large tune and you let out of it really hard and the CP3 can't limit it's self quick enough and you get a surge in the rails. In return your rails dump the fuel out the relief valve and cause a 1093 code from low rail pressure. If he hasn't changed the fuel filter and not running a tuner or box he's probably never popped the relief valve and just setting a 1093 code more likely due to not ever achieving enough rail pressure because the CP3 isn't getting enough fuel to keep the rails at the desired pressure under WOT. | |
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2004 Duramax/Allison
