Quote:
Originally Posted by KMPrenger
We've touched on this subject before, and I have to say I don't doubt that at all.
The V6 DI engines are capable of making some pretty impressive power figures with just 6 - 8 psi of boost. (450+ HP at the crank) But past that amount of boost, we typically see fuel issues where the stock pump can't keep up.
That same small amount of boost on a modern V8 DI engine should be super impressive.
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Yeah, these mechanical High-Pressure Fuel Pumps are a PITA. Too big and they flow too much fuel at idle and low RPMs. Too small and they don't flow enough at the high RPMs. It would be nice if they had two, one that had a valve that didn't open to the fuel rails until the RPMs were above 4000, otherwise it just recirculates the fuel. I think that would solve the problem for high HP demands.