jhutchison12

Hey everyone! I purchased a USED 2016 CLS400 a few months ago & love it. Besides how it performs (which is awesome!!) I'm wondering how I can tell / verify that it has been tuned / or has a chip. Have had 4 MBs previously, and from the way this car drives, I absolutely KNOW that the engine is NOT completely stock. I would like to verify WHAT type of Chip has been installed and/or WHAT has been done to this engine. HOW? is the question. Thanks for your advice/help upfront!

kdub

i think you posted in the wrong thread. this is the cls 257 thread which is model year 2019 - 2023