my buddy who drives a mustang gt bet me 100 bucks to race at a track after i just raced and beat him by 2 cars, what are some track times with the spartan 250? 275? 310?
250 tune will put you in the 13.6-13.8 range with a good 60 foot. 275 tune will put you in the 13.2-13.4 range with a good 60 foot. 310 tune will put you in the 12.8-12.99 range with a good 60 foot. This is going on that your truck is a CC/SB with stock 20's and no bigger than 35" tires. Take the tailgate and spare tire off for the track runs. Air the tires down to around 35-40 psi. Leave the line around 15-18 psi of boost and let her rip! He won't know what hit him if you run the 310 tune.