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Originally Posted by Skoolbus
The fact that it may create more boost at lower RPMs doesn't mean that it will "yield a very low temperature charge in the intake manifold". The temperature charge is dependant on the pressure rise across the compressor (boost) regardless of the RPM at which it's running. So two compressors producing the same amount of boost at different RPMs will be producing nearly identical "temperature charge".
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Being that there's less friction, since it can create boost at lower rpm's........there's less temperature change.
Temp is not completely dependant on boost levels. If that were the case, centrifugal's would create the same high temps as a roots style supercharger.
Intake temps dropped 40 degrees on average, at the same boost levels, between my roots and twin screw superchargers.
That was going from the Eaton m62 to the Whipple Twin Screw 1600ax. 40 degrees is a lot.....