12-12-2019, 03:00 AM | #1 |
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Decat downpipe
Thinking of getting a 4” decat downpipe for my B48.
Does a decat increase exhaust noise levels? I like how quiet my car is inside. Also getting a tune, so thought I might do both at the same time
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12-16-2019, 11:42 AM | #2 |
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let me know if i can help
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12-17-2019, 04:17 AM | #3 |
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Does a decat pipe increase exhaust noise levels?
I have heard they can cause a droning in the cabin. My tuner is looking for a decat. What do you suggest?
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12-17-2019, 11:25 AM | #4 |
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Yes downpipe will increase noise. I would not worry about drone with stock exhaust
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02-05-2020, 02:29 PM | #5 |
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The sound proofing on the 5 series is extremely good, don't worry about drone at all.
I have a decat on my 540i without resonators (just MPerf muffler) and get 0 drone, so go ahead and do it! It will sound a lot more "alive" but not too loud since the motor will no longer be choked by the cat. |
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