First outing with the L33 S480 Mustang Notch
I keep getting mixed reviews on this. Some say very little, just clean them off, others say a bigger burn out. I never did a real long heavy smokey burn out.
Pressure wise I think you'll just have to see what your car likes. Heat wise I've always had the best luck with big John Force burnouts on 555r's. I've probably made 100+ passes on different sets of them through the years and this is just what worked for me! Your best mod by far will be going to a better track than Commerce though 
