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Vibration issues

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Old Jan 7, 2014 | 09:52 AM
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Default Vibration issues

Anyone have any vibration problems? Any good ways to fix them? I have the dual mode exhaust with a switch a made, and usually keep it in loud mode, and get vibrations in various places, some easy to identify, some impossible seeming. They seem to mostly be occurring at 1100-1300 rpms. Thanks
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Old Jan 7, 2014 | 11:28 AM
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The NPP exhaust (dual mode) really drones at low/moderate rpm in our 2009 coupe, but sounds great when getting on the power. I just put the switch back to "Normal" for most local driving.

Some people have reported the Blockit sound mats help with drone, but it was still annoying in our car even with them installed.
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Old Jan 7, 2014 | 11:31 AM
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With the NPP, you are going to get these "rattling" in the interior at certain rpm's. Its normal. Nothing to be concerned about. If you don't like it, close the valves.
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Old Jan 7, 2014 | 02:16 PM
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Originally Posted by Ryan33us
Anyone have any vibration problems? Any good ways to fix them? I have the dual mode exhaust with a switch a made, and usually keep it in loud mode, and get vibrations in various places, some easy to identify, some impossible seeming. They seem to mostly be occurring at 1100-1300 rpms. Thanks
This may be a dumb response but here goes. I thought the same thing when I first got my 13 grand sport with dual mode. I now have 4100 miles on it and feel like it has allot less drone and has quieted down since breaking in? I might just be used to it now but I really feel like it settled down. Mine is also a convertible so maybe it has to do with the more isolation from the rear as well.
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