Hi all - new on the forum. 2019 R300. I love it, and have about a 1000kms (yup, Canadian) on it in less than 2 weeks. I'm used to loud exhausts on HEMIs, so naturally I got a tbr on the way and was wondering the same as OP - sorry OP, not trying to hijack your thread lol!
Did anyone actually have to run a tune on their 300 for TBR (or any slip on for that matter)? For those who commented about having it on for X K miles, any noticeable difference when idling?irregular? Or dead spots when pulling away?