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installed magnaflow after-cat on my 2008 128... love it. not overly loud, but better than stock - driving with windows down!!! a lot lighter than stock as well. install is pretty simple... cut stock pipes about 7" after catalytic. squirt some wd-40 on hangers. remove flat bars from under car and loosen the clamp just behind catalytic. pull off old exhaust, install new, clamp down. took about an hour. all you need is a sawzall, stainless cutting blades, wd-40, good pry bar to get old exhaust off rubber hangers.
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