Detune M157 in 2016 CLS63S to meet Euro 6C standard
I am trying to find a way to detune the M157, which is already compliant with the original Euro 6 emissions standard, to meet the more stringent Euro 6C NOx requirements in preparation for export to Hong Kong (which follows the Euro 6 emissions standard). Of course, I know this will impact both performance and drivability, but that bridge can be crossed once the car is successfully imported to HK!
I would be very grateful for recommendations on M157 tuning experts, either someone who has proven track record in re-programming the ECUs specifically to meet emissions requirements, or a combination of software changes and additional / replacement filtering hardware in the exhaust system to get NOx levels below the Euro 6C limits.
. Replace the resonators with these. will look stock, and will still be quiet.if you get someone to do you a bespoke map, they'll be able to measure your emmisions and try to pass it. I'm sure you'll have no bother!
Let us know how you get on


