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Old Mar 7, 2008 | 07:11 AM
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Orion ZyGarian's Avatar
Orion ZyGarian
7M 2JZ bird in pear tree
 
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BMWs have dual exhaust, or "twin" I should say. Pipes are only 1.5"-2" on most of them, but the newest 7 series (2003 or so) has a decent sized exhaust, as well as vacuum actuated.
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