testing the FJO at the track
the 10.3 was with pacestter headers and Y pipe and Magnaflow exhaust. No cutouts.
the button is the transbrake
A trans brake is a solenoid on the transmission that locks forward and reverse gears together. So...
After your competetion prestages or stages...Pre stage...stage...engage button with "thumb"...jump on the stall converter...yellow>yellow>yellow>REMOVE THUMB and blast off! No mention of foot and brakes!!

