I'm with Eddie on this one! And you know, if you rigged a little propeller onto ANY tail pipe it would spin. Would it add 15-25 more HP? If it did I'd set one up on my BTG cat/back duals tomorrow - cause with a dual exhaust it should add 30-50HP, right?
Ever seen those trailer hitch caps with the boat props on 'em - the ones spinning off the back of many a pickup or SUV? How much HP do you think those add?[:I][}

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