09-17-2018, 08:05 PM | #1 |
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Catless dps + MPE, how loud is it?
Hey guys,
I am running Paul's E85 Stage 1 tune right now with MPE. I am always trying to find a little more power out of this engine so the next modification should be a pair of downpipes. However, I am very concerned about the noise level since I have to drive my wife from time to time in efficient mode with flaps closed. She feels embarrassed when the car catches attentions because of the noise. Currently the noise level with stock dps and MPE with flaps closed is comparable to my wife's 330i (from inside of the car), I am just wondering how much louder could that be if I get catless downpipes. Does anyone have any idea? Thanks in advance! |
09-17-2018, 08:53 PM | #2 |
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I just did it and with flaps closed it’s not too much louder just tinier (if that makes sense). Flaps open and it’s completely different. Honestly, I hate how raspy it sounds now. Not too sure it’s that big enough difference from stage 1 power either to justify unless you have bigger plans than stage 2.
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09-17-2018, 09:37 PM | #4 |
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Consider deleting the Active Sound. I found that quietened the cabin noise.
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09-17-2018, 09:43 PM | #5 | |
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09-17-2018, 09:44 PM | #6 |
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Thanks! That sounds mean!
I wouldn't mind it being louder with flaps open but with flaps closed is it that much louder?
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09-17-2018, 09:45 PM | #7 |
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I already did, that's why with flaps closed I feel the noise comparable to a 330i. :'D
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09-17-2018, 10:07 PM | #8 |
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Catless DP and MPE isn't that loud with valves closed. In fact you can barely hear the idle at the traffic lights. Its also pretty quiet on acceleration.
With valves opened, its night and day difference. You'll notice a sharp pitch at around 5000rpm. The cold start with valves open is extremely loud however with valves closed, its not too bad.
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09-23-2018, 11:39 PM | #9 |
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09-24-2018, 09:16 AM | #10 |
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Not MPE but this is my car which has a 3" catless dp to a 2.5" x pipe that deletes secondary cats and resonator to the stock zcp muffler. Stage 2+ tune by alpine with a very aggressive burble tune. It's loud in general but only really loud if you get on it tbh here's another link to an exhaust clip I posted in the tune thread https://www.bimmerpost.com/forums/sh...php?p=23631098 |
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