Quote:
Originally Posted by Raid3n
what's the legality of a butterfly valve in the exhaust?
pop on in, quiet on demand.
and if the controls are not allowed to be within reach of the driver, have it in the trunk?
want to hear that exhaust? pull over, and open it up. done having your fun? close it back up.
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I think this is called a cut-out. If you look in the MVA, you'll see "Cut-outs Prohibited"
What you're referring to, butterfly valve, comes stock on non-m e46.