Fuel pressure..........?
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From: Decatur, TN (N-W of Athens)
I always thought 40-45PSI was the GM range. I know my TPI made that, but I haven't put a gauge on my LT1 yet. Someone here said theirs did 35 at idle and I think like 44 at WOT.
Here's what TPIS had to say (They're local for me, and I hear ALOT of good things about them, so I trust their word)
Here's what TPIS had to say (They're local for me, and I hear ALOT of good things about them, so I trust their word)
The LT1 fuel pressure is unusually high for the way the computer is calibrated. We are finding that, unless you send us your computer for reprogramming, you will be faster at 39 PSI, with a stock to bolt on modded engine. Installation time: 30 minutes.
Is that on the stock FPR or and ajustable FPR? Just wondering because on mine I set it to 50 psi on a nitrous run, then after the run its back at 44 psi..I guess its the PCM taking it back, since I'm at WOT.
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Aside from the KEY ON, ENGINE OFF pressure, get FP while underload, tape it to your windsheild and beat the **** out of it. then if it drops signifigantly, then you have a issue. On the dyno mine was like 43.8 @ 2000 rpms and dropped to 41.6 @ 6000 and this is a 255 lph pump. brand new
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