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Okay, here's some preliminary testing results. I did 3 runs at WOT from 2000-6500 RPM in 2nd gear.
ambient=22.5 C,ic in=109.5 C,ic out=54.0 C,RPM=6500,Speed= 65 mph,Gear= 2,Boost= 15.5 psi
ambient=22.5 C,ic in=111.0 C,ic out=53.5 C,RPM=6500,Speed= 65 mph,Gear= 2,Boost= 15.5 psi
ambient=22.5 C,ic in=112.0 C,ic out=51.0 C,RPM=6500,Speed= 65 mph,Gear= 2,Boost= 15.5 psi
Intercooler efficiency ranged from 64-68% (about what I expected). The supercharger heated air about 87-90 C over ambient (just like with the Alta intake). I need to do more testing (including reinstalling the Alta intake), but it doesn't look like air temperatures are much different than with the Alta.
Here's the best part, initial examination of the upstream pressure (between the throttle body and the supercharger inlet) shows the bare K&N flows a bit better than the Alta intake. The curves are very similar up to about 4500 rpm, where the HAI starts to outflow the Alta, giving over 0.1 psi less pressure drop by 6500 rpm.
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