Re: 2015 SRT 6 rough start
Sorry did not look at this earlier but am in SW Orlando (behind Universal) and have a number of diagnostic tools.
BTW a SRT-6 shares the drivetrain with a Merc SLK32 (the AMG models drop the last digit - I also have a SLK320) and scan tools that can check an R170 (16 pin) will work on most Crossfires. (Autel Diaglink, iCarSoft MB-II)