Yes ECU tuning is well worth it, Not Chips. I don't know how much your into performance but I'm a fan of the new TVT MB cover/intake, looks great. As for the debadging, you should try emblems to cover the Chrysler symbols. Like these, https://www.crossfireforum.org/forum...ead.php?t=7332
And pretty much anything you want for this car will be a little more expensive then normal because it is a Mercedes ( a well hidden one)