Thread: What are these?
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Old 06-21-2018, 09:06 AM   #3
Silverwing
 
Drives: Yellow 2018 SS
Join Date: Jun 2011
Location: South FL
Posts: 114
Oh so the regular exhaust comes with valves too? Interesting.

Is this so it doesn't sound like dog crap when it's in V4 mode?
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