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      06-10-2018, 09:22 AM   #7
mystic sport
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Drives: F10 M5
Join Date: Oct 2006
Location: Kent

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Quote:
Originally Posted by weeman6556 View Post
If you want a little extra noise for very low cost I recommend performing the exhaust valve mod. Itís made the sound, perfect in my eyes, without buying a rather rediculously expensive system.
Is this done by wiring open the exhaust valves?