Fuel pressure 50 PSI on stock motor?
07-03-2005, 12:15 AM
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Car: 91 Firebird
Engine: 3.1 V6
Transmission: TH-700-R4
Fuel pressure 50 PSI on stock motor?
That Tech FAQ chart showed that stock FP is 42,bumping it up to 50 on a stock motor is ok and shows gains? Does the same go with a V6? Any of the AFPR for TPI's work for the V6 right?
My 3.1 only has a Cat/Catback and Intake and I'd like to increase the pressure to 46-50
My 3.1 only has a Cat/Catback and Intake and I'd like to increase the pressure to 46-50
Last edited by V8 Slayer; 07-03-2005 at 12:22 AM.
07-03-2005, 09:34 PM
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Car: 95 E-150 & 07 Kawasaki ZX-6R
Engine: A slow one & a fast one
Transmission: A bad one & a good one
Axle/Gears: A weak one & a chained one
46 to 50psi....on what size injectors, stock? What is your stock pressure, no vacuum? And don't tell me 'what it should be', tell me what yours IS. Because I've noticed as much as a +/- 5 psi variance between stock parts in other cars.
Sounds too high to me. Especially for not having modifications aside from basics... I suspect bumping fuel pressure will not gain you power, only make you richer. You don't need it without, as a minimum, intake manifold work, maybe a mild cam, or mild headwork....
You definitely aren't at the point where you NEED the extra fuel yet. Trust me. Been there, done that with an AFPR.....thought I needed the extra fuel so I bumped it up....ended up running SO rich that it wouldnt idle correctly and was making ****ty numbers on the dyno, and blowing black/grey smoke on decel. And this was with stock injectors also, on a very modified motor.
Sounds too high to me. Especially for not having modifications aside from basics... I suspect bumping fuel pressure will not gain you power, only make you richer. You don't need it without, as a minimum, intake manifold work, maybe a mild cam, or mild headwork....
You definitely aren't at the point where you NEED the extra fuel yet. Trust me. Been there, done that with an AFPR.....thought I needed the extra fuel so I bumped it up....ended up running SO rich that it wouldnt idle correctly and was making ****ty numbers on the dyno, and blowing black/grey smoke on decel. And this was with stock injectors also, on a very modified motor.
Last edited by Nixon1; 07-03-2005 at 09:36 PM.
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