Looking for car set-ups or tune-ups for Racing Rivals.

BDaddyDawgzTime

Hi gang, I need help with setting up my cars. I have great cars and on the verge of being champions but all of them are running, 7.1 -7.4 while the same cars are running 6.8, 6.9. I'm pulling my hair out and am at a loss. I appreciate any help or knowledge of this elusive fruit. Thank you and have an awesome day!