just got a 95 m6 with 24500 miles on it. mods include borla, BBK shorties, MSD ignition, K&N, Hypertech Power programed.
Not sure if I should get a tune or add some mods, I want to get an electric cutout but have heard that their not all that nice. Anyways I was wondering if I should spend the money on a tune or mods, Any input would be appreciated.

Also i have a 160 thermostat, am i losing power when it gets warmed up cause it sure feels like it. New to fuel injection. Please let me know what I need to do.