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      03-27-2016, 10:14 PM   #3
MattPro
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Drives: '13 F10 550iX, '91 E30
Join Date: Dec 2015
Location: Chicago Burbs

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Quote:
Originally Posted by badblack550xi View Post
i think your biggest draw back is stock down pipes and exhaust.
You need less back pressure and crank those suckers up in boost.
I definitely agree. Sadly I have to do emissions within 8 months, but after I plan to get some downpipes. And currently I have the stock mufflers removed, so it should be pretty damn free flowing after I get the DPs.

I've also been silently hoping we get a flash option for the DPs but I know that's never going to happen
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