2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Can the Walboro 255 Give too much fuel?

Old Aug 26, 2005 | 10:26 PM
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Question Can the Walboro 255 Give too much fuel?

I was just wondering if the walboro 255 would give my car too much gas?
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Old Aug 26, 2005 | 10:32 PM
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with a stock ecu...i think so. but isn't the injector's injecting the fuel in?
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Old Aug 26, 2005 | 10:38 PM
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Yes but such a powerful pump can over power the stock injectors, and fuel regulator.
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Old Aug 26, 2005 | 10:44 PM
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Indeed, a walbro can raise rail pressure above 40psi if the regulator can't bypass enough, and injectors flow more CC at higher pressures at the same duty cycle.
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Old Aug 26, 2005 | 10:46 PM
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Originally Posted by tIIsleeper
Yes but such a powerful pump can over power the stock injectors, and fuel regulator.
Thats what I was told. Itook mine out and put back in a stocker.
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Old Aug 27, 2005 | 02:25 AM
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I had mine rewired to constant 12v before, it made flooding a bitch when I broke my engine in, as soon as I rewired it again, it stopped flooding and ran a lot better., so yes it can def give u too much fuel
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Old Aug 27, 2005 | 04:41 AM
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^ lol mine floods at warm up some times from the FD pump with stock fuel system on a N/A fuel pump wire b/c of this very reason.

And yes tIIsleeper exactly as SonicRat has said, covered many times.
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