Go back a dozen years ago a lot of people did a lot of the pioneering stuff on the BAs no "edit" just chimps
Tuners were Nizpro,CV , ChipTorque, HPF, APS etc none of these cars were perfect, times were run, customers were happiesh.
Cars went farkin hard, along came SCT, the learning curve starts again.
For Gunna, the development on T6 street cars will start to wind down. No Growth
So just stick with the best you can get. Don't second guess over a decade of experience