Another short GoPro video

younggun2.0 said
110* TTI 2”-21/8” step headers into TTI 3” h-pipe exhaust into dynamax 12” bullets dumped in front of rear diff

ok, i have 2" header with 3.5 collector and pipe. Thinking about reducing to 3" exhaust pipe. Do you lock your timing or use a curve? Whats your max timing you found to work best? Thanks again and nice ride.