2017 shelby gt350 burble

I have read articles on here for burble. I want to experiment with burble, especially after i heard an M3 drive by house and it had the sweetest burble sound. I have tried Murfie's way and i get to loud farts out the back. I have tried a couple of others suggestions and Burble is just not Happening for me. I am going to try one more version where it uses 44894 & 44895 there is an additional function 12249 and see if it that will work. Any assistance on how to get a good burble on the Shelby i am all ears. Thanks all