03-13-2010, 02:55 PM
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#11 (permalink)
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Enthusiast Member
Join Date: May 2009
Location: Oildale, CA
Posts: 412
Drives: 2013 911 4S
Rep Power: 417
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Quote:
Originally Posted by Togo
Wow I didn't realize they did that with a CBE on. Personally the low end TQ on the Stillen wasn't that great, i thought. Looked nearly stock in the low RPMs.
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Nearly stock torque #'s at low rpm is typical for centrifugal supercahrgers. The faster you spin them, the more boost they make. Positive displacement superchargers, on the other hand, reach maximum boost at roughly 1/3rd of maximum operating speed, meaning you have full boost at 2,500 engine rpm.
The torque curve that the GTM kit makes looks typical for a positive displacement supercharger and I'm amazed that they are getting that out of a centrifugal charger.
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