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If you just cut off the muffler then straight pipe it do you know if it will hurt the gas mileage at all? Would this even sound good? Thanks in advanced
 

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in my opinion it will sound bad. it will sound pretty close to one of those annoying civics.

What i did on mine was i went on craigslist.com and bought a 80 series flowmaster muffler for 40 bucks. then i went to an exhaust shop and they charged me 40 bucks to remover the resinator and replace it with straight pipe and to put the muffler on.

Here is what it sounds like:

IMO this is the way to go if you dont want to drop hundreds of dollars on your exhaust.
 
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