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      04-30-2012, 11:44 AM   #30
gary88
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Drives: '07 E92 335i
Join Date: Dec 2009
Location: Chicago, IL

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2007 E92 335i  [3.98]
Quote:
Originally Posted by Yo-Hi.Red.Devil View Post
Is this after you had a very dirty inside pipe? I'm talking years of soot that's never been removed.
I do this weekly, so no. If you have soot caked on you'll need something to break it up first. I've used a little bit of brake cleaner on a sponge before and it worked well.
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