2021 M340i XDRIVE exhaust with Catless downpipe starts in sport mode then eco pro then back to sport mode car was warm prior to filming , next video will feature morning cold start the Downpipe is for a Toyota Supra and it works on both rear wheel drive and x drive models for the BMW 3 series with the B58 motor ( M340i )
The brand of the Downpipe is Megan racing
Yes the vehicle will have a check engine light if you install this , currently 2021 vehicles can not be tuned but it is in the works ! No reported driveability issues or changes with the check engine light on

Link to downpipe

Installing was a breeze and fit with 0 issues

https://www.ebay.com/itm/313290311540