if your car is getting dyno'd... make sure there is 1 strap per 400 hp, and that the shop is ready to repair any damage they cause by running the dyno. (If the engine or trans breaks, hey, that's on you) but in this case, this shop ought to fix what they caused with a strap THEY broke

https://www.powernationtv.com/post/challenger-hellcat-breaks-free-from-dyno-catches-fire