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Jim2 Jim2 is offline
7.0:1 > 11.3:1
Join Date: Oct 2003
Location: Calgary
Posts: 2,122
From what I recall in my younger days of tuning, a shorter intake runner lends to pulse tuning at high rpm, longer intake runner is required for low rpm. On the other hand exhaust headers are the opposite. I have a book on manifold and header design which I could reference.

The 930 intake manifold shape and size appears to be a space compromise as result of the amount of other "stuff" needed in the engine compartment: air plumbing to/from the turbo, intercooler, air metering box, priority valve, air filter housing, etc.

Old 02-03-2007, 05:26 PM
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