Message: On my old 2k LS1 camaro I had a cut out and I dropped a tenth or so from this mod alone. It was a cost effective alternative to an expensive cat-back system. Now I was wondering, has anyone tried this on a 4.7? If so how much did you lose in the 1/4 or gain on the dyno? How restricive is the stock cat back?
Thanks,
Marty
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Subject: Cut out Question