Thread: HFC
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      12-12-2012, 09:57 PM   #3
Jbook
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Drives: '15 FO M4
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2011 BMW E90 M3  [4.72]
I don't think there will be any brand that will be a direct bolt on. I originally purchased the Active Autowerke catless x-pipe and later added their HFC option. Adding what brand of "race pipes" you have would be helpful unless they're custom.