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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > BMW 430i gran coupe MUFFLER DELETE STOPPED POPPING AND BANGING
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      10-04-2019, 05:53 PM   #1
Rubi_B
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Exclamation BMW 430i gran coupe MUFFLER DELETE STOPPED POPPING AND BANGING

I have a 2019 bmw 430i gran coupe, I got a muffler delete approximately 3-4 months ago. The pops were INSANELY loud, literal gunshots sounds of an semi-auto rifle. Recently I got a car wash some guys came over and washed the car. Right after the wash I drove the car and it stopped popping and banging, i thought it was just because it just got a wash since when I do wash the car it happens, etc, but no. Iíve been driving it for more than a week now it does pop very very little but it sounds as if itís clogged, I donít know the reason for it. Itís annoying me since the pops would happen at 4K-5k rpm. Around 1 1/2k-3k rpm it was a loud roar, now it sounds like I put the one muffler back on. I donít know what it is. I havenít checked for any cracks or if the cats are clogged or damaged either, but there is no odor coming from the exhaust. Erving the car sounds the same, it burbles but when driving it is completely different. Any suggestions?
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      10-04-2019, 06:02 PM   #2
Zanity
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I think the car wash guy actually fixed your car, it should have never popped and banged like gun shots with just a muffler delete in the first place.
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      10-04-2019, 07:21 PM   #3
Rubi_B
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But when taking off the car sounds like the stock muffler is back on. So it doesnít sound loud at all
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