Is Fuel upgrade necessary?
Originally Posted by Evo007
The stock fuel pump is more than enough for what your doing. No need to waste the money!
Originally Posted by timzcat
I am suprised to hear you say that. It appears that the Walbro on the stock regulator is pushing 52 psi of pressure with no hose attached. The pump is too much for the stock regulator and is overrunning it.
I ordered a new pump because my stocker is starving for fuel at WOT. I will add the regulator for the flexability what PSI should I be running with cams, and full exaust?
With the vacuum hose off the standard is 42 to 45 psi.
Injector manifacturers typically use 43.5 psi when flowing the injectors for size and pattern, so right around there is best.
At 52 psi or so with a Walbro and no pump you have no real control over fuel flow at idle or light cruise and the car will run richer then normal.
Injector manifacturers typically use 43.5 psi when flowing the injectors for size and pattern, so right around there is best.
At 52 psi or so with a Walbro and no pump you have no real control over fuel flow at idle or light cruise and the car will run richer then normal.
Originally Posted by timzcat
With the vacuum hose off the standard is 42 to 45 psi.
Injector manifacturers typically use 43.5 psi when flowing the injectors for size and pattern, so right around there is best.
At 52 psi or so with a Walbro and no pump you have no real control over fuel flow at idle or light cruise and the car will run richer then normal.
Injector manifacturers typically use 43.5 psi when flowing the injectors for size and pattern, so right around there is best.
At 52 psi or so with a Walbro and no pump you have no real control over fuel flow at idle or light cruise and the car will run richer then normal.
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Warrtalon
Evo Engine / Turbo / Drivetrain
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Nov 5, 2005 07:52 AM
