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      09-12-2012, 01:48 PM   #2
derSpeed
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Drives: 2015 X1 35i M sport
Join Date: Oct 2011
Location: NE OH

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I think I read that there is a Dinan chip for pre-2007 X3s. Supersprint makes a complete exhaust kit including headers. I wouldn't mess with an open air intake on a normally aspirated car. You may lose a bit of low end torque.
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