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Superfly_M3 · 01-16-2013, 12:54 AM

Hey Guys,

I bought a used Akra Evo (full system) from a forum member here. While the sound is perfect at most RPMs. The Akra has a deep growl during idle (~800rpm). It also has a resonance at 1-1,200rpm. Parking underground is literally scary. The echo is insane. Has anyone tried adding additional resonators to quiet the Akra down a bit? Looking at the system, the very front section of the Akra might fit two resonators.

Any advice is appreciated.

01-16-2013, 12:54 AM	#1
Superfly_M3 Captain 72 Rep 959 Posts Drives: 2011 M3 Join Date: Sep 2011 Location: Toronto iTrader: (0)	Quietting down Akra Evo ... Hey Guys, I bought a used Akra Evo (full system) from a forum member here. While the sound is perfect at most RPMs. The Akra has a deep growl during idle (~800rpm). It also has a resonance at 1-1,200rpm. Parking underground is literally scary. The echo is insane. Has anyone tried adding additional resonators to quiet the Akra down a bit? Looking at the system, the very front section of the Akra might fit two resonators. Any advice is appreciated.
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