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Thread: Exhaust note
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Old 12-31-2012, 03:42 PM
PeterC4 PeterC4 is offline
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Join Date: Mar 2011
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Mein Auto: 535xi,328xiC
I was hoping for COBB too, I went with Burger JB4. They have downpipe mods too, the JB4 has been trouble free in very hot and cold weather...and makes a real difference. There are 2 stages, I have stage 1.

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