I just installed the BT MOTO tune into my 2021 GT. Looking at the dyno chart, I'm not sure why I did it because almost all of the increased HP comes at 6000 rpm + which I almost never do! The rev limiter is now moved to 7500 and mph to with total HP increased by about 35 and top speed to 186.4 mph!.
$ 895 which I can now use for bragging rights only. Living in NJ, I haven't yey been able to do a good WOT run because of traffic but will report back after I do.
The change did not make a bit of difference in terms of start-ability, smoothness or all around behavior so I 'm not sorry about the change but, for me, it was ego rather than functionality! I did expect to feel more responsiveness throughout the rev range but, truth be told...hmmm.