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Old 08-17-2012, 03:21 AM   #6
sw20kosh
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So they managed 283 HP with the stock exhaust and stock header/cat?

Then they gained 6 hp by switching to a 3" exhaust post turbo?

That is way less gains I would have expected from going 2.25 --> 3"

Also can't help but notice how similar this design is too Don's AP kit. Its uncanny
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