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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning New BMW ECM software update Mx40i - DOWNTUNE?

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      01-14-2019, 11:17 AM   #1
jules_78th
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New BMW ECM software update Mx40i - DOWNTUNE?

Location Toronto, Canada.

I currently have my 2019 M240i Cab for warranty work at the dealership and the they just gave me a call telling me I need a ECM update. I asked what it entails and they couldn't really tell me so I did some research and the folks in the UK that has received the updates are saying that the update removes the pops and crackle of the exhaust sound and reduced engine noise upshifting?

Link here https://www.facebook.com/DervTech/po...26934600933843

From what I read it looks like this was done for emissions purposes? I'm hoping this is not the same for folks in NA? Anyone have any more info on this.

Car is being serviced right now, should I call in and have them not do the ECM update?
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      01-14-2019, 12:40 PM   #2
marcthedark
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Think in the UK it was done for emissions due to the fact that they got a particle filter
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      01-14-2019, 04:21 PM   #3
jules_78th
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Quick update. Picked up the car, Its quieter. I'm going to have to drive it more and give an update.

Revving the engine on sport or sport + on neutral I can hear the pop and crackle, the moment I drive the car (on either sport or sport+) exhaust sound is very very faint. Upshifting or Downshifting on high RPM (4-6k) on sports/sports + sounds like comfort mode (i have playbacks on my dashcam with the engine roaring on high rpm prior to the update, doesnt sound like that anymore but will double check) and minimal exhaust crackling. I gotta play with it some more and give an update. This sucks.

Interested if anyone else that has a 2 series get the ECM update and provide feedback.
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