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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Stepping up to a T4 is somthing to consider for a big HP buld as it has a much larger volume potental. With most T3 header's the volume change from the secondaries to the turbo inlet is quite agressive. Not so much w the T. I forget but it is like 3.5 v 5.5 sq in.

Probably not a big deal for most.
Old 05-24-2010, 09:02 AM
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