Quote:
Originally Posted by atmosphericM
My opinion is that this once again boils down to personal preference. If you want to really use that supercharger and plan to keep the car in the upper revs all of the time in order to do just that, the N54 IM is probably a little better. But if you want to keep the car an easy DD when you want it that way, and plan to spend plenty of time in the low RPM's, keeping the 3IM in order to "even out" the power band would work well. At least that's how I look at it, but I could be wrong about the N54 IM being more powerful up top with the S/C.
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It's not preference - the Supercharger is near is maximum speed at 7500RPM, and it's not producing any more boost. There isn't really any benefit to having the N54 over the 3 stage - on a Turbo Car where boost isn't really contingent on RPM, I would agree.