Quote:
Originally Posted by Jdata
They added power based on a FFR post. This was done via engine dyno, 18 hp. Over glasspacks
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The more power you make the more you lose both from a % standpoint and an exhaust volume standpoint. If you are making 400 to 500 they might help a bit depending on cam timing. Over 700 I guarantee a loss just because of the restriction vs a 2 1/2" straight through design.