how much hp form ud slp loudmouth and free air mod
04-04-2006, 07:53 PM
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how much hp form ud slp loudmouth and free air mod have the mods in my sig and plan on adding an UD pulley 25%, free air mod, and slp loudmouth, how much rwhp do you think ill pick up? right now im runnning an open y-pipe 
04-05-2006, 04:48 PM
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I would say 7rwhp from pulley. You will actually lose a few hp with the cat back if you are now running open y, not to mention some extra additional weight. Should pick up a a few hp from free air mod.
