Downpipe install DIY
I've been looking at DIY's for this on here and youtube. Seems pretty straight forward.
Just wondering if anyone has any extra advice of what to do / not to do.
Cheers
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2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
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