Hello, id like to know when you are doing 6R80 2 relay trans brake, people wire them to solenodi B and solenodi C which is B for C - 2nd gear B-3rd gear
my question is: why 2-3 gear solenoids when you are going to launch using 1st gear? or i am wrong and people launch in 2nd gear?

also when you do two relay trans brake, is there anything you need to adjust in tune to make it work?

thanks for input