I made my own two relay Trans brake in my 14 naturally aspirated it didn't help at all on the stock converter, the car ran faster flashing off idle, I'm sure it would make a difference if you have some boost though
thank you for your input. I am on a turbo set up right now, my 60ft are at a 1.84 best average is 1.9 just try to get a 1.7 for now, till this winter ill go with the converter.