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WERK I WERK I is offline
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Join Date: Jan 2003
Location: Wisconsin
Posts: 3,291
In a Normally Aspirated engine that would be true with the CIS systems, since we are just dealing with, basically, an air pump. But with a turbocharged engine, the exhaust gas temp and velocity will have a direct effect on turbocharger compressor output. The exhaust systems being tested will probably have different characteristics in that respect with the 993 HE's, I suspect, having the advantage there due to shorter primary's. Probably not a big difference, but noticeable. Of course things on paper look a whole lot different when tested in the real world.
Just a $0.02 theory.
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 01-04-2009, 01:05 PM
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