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All the Fast Intentions data is crammed into one really long thread so I cannot dig it up within the hour lol... but on one of their projects they checked to see if the stock fuel pump was up for a bit of horsepower and it kept up with as far as they bothered to push it before swapping it out precautionary.

I think the stock pump would probably keep up. Its at least something I would do only if it wasnt holding, rather than proactively. That is, on a NA car. A fuel pump is always running at 100% in the Z since there is no resistor pack or anything... so its not any extra wear on the pump to use it for all its got. I just wouldnt want to run it to the max on a boosted application since environmental conditions and boost variances will cause fuel demands to have a bit larger swing.

But there is certainly no harm in upgrading the pump anyway. I think I am going way off topic here mixing up 2 active threads on E85. This one here is supposed to be about a supercharged application I suppose.

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