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I have a f30 n55, at first I just had a resonator delete and it sounded a little more aggressive and no drone that I can remember, then I had a muffler delete and I had drone like 2k and up, I didn’t have the resonator so the guy welded a j pipe and it seemed to help, in all I’m pretty happy, I drive a lot faster just so I can hear it roar and pop lol, so less gas mileage. It still has drone but I asked my ex if it bothered her and she said no, every chick I have in the car sAys they don’t notice, so that’s good enough for me. Sounds so good in tunnels
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