Just had this done last week. I have a hi-flow cat and a flowmaster muffler where the old cat used to be and from there 2.5' piping makes its way to the side...I went from 180.4 hp to 187.3 with the system. Dyno was done on a dyno jet machine.
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Picture of my new mod..=-)
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Pretty original. I've never seen that before.
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the side exhaust are cool and all but enjoy that one wheel well you can because the exhaust is gonna eat it up.. my buddy's ford F150 had an exhaust like that from factory and it ate 2 of his 20's so he complained next years fords (98) his is a 97 never had the exhaust like that.. dealer split cost of new exhaust system for his truck but left him with 2 20"s that were ruined and had to be replaced :(
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