Thread: Mid pipe mods
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      05-27-2021, 09:47 PM   #49
Pantagathus
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Drives: 2021 M3 BGM
Join Date: Feb 2021
Location: California

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Originally Posted by warcity View Post
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Originally Posted by Ghozthunter View Post
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Originally Posted by warcity View Post
Back with an update:

Primary res was deleted few weeks back 5% sound increase.

Secondary cat was deleted today. Much better. 30% sound increase. No droning. Sounds good.
Any CEL with deleting the secondary cat?
None at all. All good and normal. I must add that the added sound is only noticeable in sport and spot plus. Comfort mode is quiet as a mouse.
That's interesting to hear. I drive with the engine in Sport+ by default, but cruising on the freeway I'll often go back to comfort, close the pipes, and turn off the sport HUD. Being able to cruise with not a lot of noise is pleasant, but being able to liven it up when I get off is great. If I can add noise when I want it but not get a headache on the freeway I'm sold
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