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ISF Exhaust?
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05-08-2012, 04:48 PM
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LucWerkz
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Quote:
Originally Posted by
saeedg48
it's a rpm sensitive valvetronic system.
Quote:
Originally Posted by
brandonwuwux3
its the intake when you hit a certain rpm in the isf
Do you guys know of any aftermarket parts for the M3 that can do this?
Appreciate
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LucWerkz
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