I just modified my exhaust in my back yard. Pretty much ran 2 mufler bypass pipes to the exhaust tip. Pipes were 1 inch OD and inside was about 3/4....it sounds amazing and there is absolutely no resonace on freeway. This job is not for someone who doesnt have an arsenal of tools and experience on working with welders. If you guys want to hear it let me know and ill make a video.
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