Mods for 2018 S63 Sedan 4.0
1. Exhaust valve control. I had seen the Renntech but understand that ASR is the same and cheaper. Hopefully someone can send me the link to the best place to buy it from. I did email Euro Performance.
2. ECU Software upgrade. I have only seen Renntech and wonder if there is a better option.
Thank you for your help.
1. Exhaust valve control. I had seen the Renntech but understand that ASR is the same and cheaper. Hopefully someone can send me the link to the best place to buy it from. I did email Euro Performance.
2. ECU Software upgrade. I have only seen Renntech and wonder if there is a better option.
Thank you for your help.
https://mbworld.org/forums/w213-amg/...ust-evm-2.html
EC ECU is highly recommended and they warrant their tune. Take α look at their website for information about the performance gains and warranty.







