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      12-15-2012, 09:54 AM   #30
Beedub
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Drives: 2007 Z4 M roadster vt2-500
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Quote:
Originally Posted by ZStig View Post
Thanks everyone. There are actually tons of threads on m3 forums, and everyone seems to be using AR20 resonators to go catless in section 1, so thats what I'm gonna do + add 90* bungs and an egt bung

tom wy dont you just go for really high flow 100 cell cats, they are making insane power jumps and your still legal for tailpipe tests which happen yearly??

also its of course much kinder to our world ( alittle weak but, still an important issue)
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