Too me drone isn't drone unless the cabin is vibrating and going uphill for a long time pisses me off. On flat roads I don't notice anything. In the end you won't make these NA cars louder than a stock '03-'06 v6 mustang with borla/magnaflow mufflers. The loudest I have had my car drone is with my 3in straight y-pipe and free flow muffler. And still not louder than a mustang. I've been meaning to get back to that set up and post videos for comparisons.
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