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#1 |
Registered Member
Join Date: Feb 1999
Location: Indianapolis, IN
Posts: 963
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![]() what should my fuel pressure be with my mods with the car at idle and with the vacuum hose off I am running 36 but I think I might get better performance by dropping it to 32. What do you guys think you can see my mods in the sig below
------------------ 1991 Lx sedan 5.0, 5spd, GT-40 Heads, Cobra intake, 73MM mass air, 65mm TB, FPR, 24lb injectors, E303, Headers,off road H-pipe, Flows, K&n , hurst, 3:55's, pullies, etc... Best ET 13.5 (2.15 60ft) Best MPH 103.9 On semi-bald street tires New mods! electric fan, nitto drag radials, mac upper and lower control arms, HD trac-loc, lakewood 50/50's on back, shift light, centerforce dual friction, and rebuilt heavy duty T5 |
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#2 |
Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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![]() How much of a performance boost did you get when you lowered it from 39 to 36psi? I would think you would be better off raising it than lowering it.
------------------ 351W 89 Mustang GT Convertible |
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#3 |
Registered Member
Join Date: Sep 1998
Location: Pont-Rouge,Quebec,Canada
Posts: 55
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![]() I would say between 45-50 psi. I have a slightly more aggressive setup and i run with
62 psi (i had to raise fuel press up because of high compression 10:1 but it was at 50psi before 9:1) i guess you could get 1-3mph more at the end of the track. the only way to know is to do test and tune session. |
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