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      07-23-2008, 11:43 PM   #4
HP Autosport
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Drives: F80 M3
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Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

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Check the clearance between the cross-over section of the exhaust and the chassis brace. Most shops will secure the exhaust as is sits may cause the cross-over pipe to come in slight contact with the chassis brace. Pre-load the system with a spin jack, then secure all the clamps, that usually does the trick.

How many miles did you put on the exhaust? There is a break-in period for the Borla system.

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