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skyline32 · 07-29-2014, 07:49 PM

I've been looking at Butterfly styled mufflers and stumbled upon these

APEXi - Exhaust Control Valve - Nengun Performance

Has anyone used these before? Thoughts? Not worth it all together?

07-29-2014, 07:49 PM	#1
skyline32 Proud to be called a RS Regular! Join Date: Aug 2011 Location: vancouver Posts: 109 Thanked 6 Times in 5 Posts Failed 4 Times in 2 Posts	Emission Control Valves, worth it? No? I've been looking at Butterfly styled mufflers and stumbled upon these APEXi - Exhaust Control Valve - Nengun Performance Has anyone used these before? Thoughts? Not worth it all together?