450 HP 481 TQ - New Dr Euro DP's - Dyno Results
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Joined: May 2011
Posts: 79
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From: Detroit
I jumped off the dock and had these downpipes installed last week. Picked up and took a long drive this morning, still grinning. Here's the upshot: you may not know it yet, but YOU WANT THESE. What they do for a 535i is that good.
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