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I’m starting to like it more, the more I drive it. I was going to just keep it until Akra was released this fall.....but I might just keep it. The M5 is incredibly insulated. I can roll the driver side window down and go wot and it sounds great. To get that sound inside the cabin would take a really loud exhaust and get me too much police attention. If you want a low speed rumble this upgrade is not it.......wait for a race muffler from Eisenmen, etc.
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