First do the infinite nitrous/nos and infinite speed breaker. When the race begins do speed breaker and hold down the nos button down while in speed breaker for the entire race. This will make it unfair race for your opponents. The race will be very easy but will take a long time to finish. This is a good tecnique on the stacked deck team and on bosses. This won't work in quick race,challenges and canyon duels. I hope this made it easy for you.