01-15-2010, 12:13 PM
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#50
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Drives: BLUE CAMARO ZL1 1LE M6
Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,427
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Quote:
Originally Posted by alfie43
It has been demonstrated many times and is commonly accepted that most of the restriction in the factory system is in the cast exhaust manifolds and cats. This is where your potential power gains are.
There are little power improvements to be had after the cats. Cat backs are mostly about audible improvements. We have seen axle backs changed with 0 hp gains on the dyno.
Alfie
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What He Said 
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