Focus Fanatics - View Single Post - Exhaust question for those w/ 09-10 5-speed coupes..
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Old 01-28-2013, 09:43 PM   #2
Kipp
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What I Drive: 2013 F150 4x4 5.0, 2014 HD 883 Iron

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haven't tried it, but logically it would make sense that you would get a small (1-2hp) power gain and a louder sound. that said though, the factory exhaust is 2.25" and has a fairly restrictive flow compared to aftermarket 2.5" piping and better flowing (and sounding) resonators/mufflers.


unless you can do all the work yourself (cutting, fab work, welding) to put in a straight pipe, you're going to get the best bang for the buck with an aftermarket bolt on system. having a shop fab and weld in a straight pipe could easily run $200 or more for something with small results and a potential sound you may not like.


just my .02, but stick it out for the stealth.
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