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EvoX95123 · Jul 9, 2009, 11:18 PM

First, my definition of "drone" is the cabin vibration/resonance with the exhaust note. Is this correct? Let me assume it is for now.

So I got Perrin CBE after researching various internet Evo sites. I was very disappointed that the inside of car drones. If I accelerate normally, I can hear cabin vibration sound between 2,250 to 3,500 rpm. This is very annoying.

I had the performance shop that installed the Perrin CBE double check the bolt tighteness, per Perrin's suggestion. But it still drones.

Can it be fixed? Any pointer will be greatly appreciated.

Jul 9, 2009, 11:18 PM	#1
EvoX95123 Newbie Personal Sales Rating: (0) Join Date: Jun 2009 Location: SF Bay Area Posts: 45 Drives: 2008 Evo MR	My New CBE Drones. Can it be fixed? First, my definition of "drone" is the cabin vibration/resonance with the exhaust note. Is this correct? Let me assume it is for now. So I got Perrin CBE after researching various internet Evo sites. I was very disappointed that the inside of car drones. If I accelerate normally, I can hear cabin vibration sound between 2,250 to 3,500 rpm. This is very annoying. I had the performance shop that installed the Perrin CBE double check the bolt tighteness, per Perrin's suggestion. But it still drones. Can it be fixed? Any pointer will be greatly appreciated. __________________ Mustang -> Firebird -> Corvette -> BMW 740i Sport -> Evo X MR
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