i have all the packs, except for the made man pack, and i still can't get any tuning any higher than sports tuning, even on the hot rods i got from the pack.
[Edited by TalonKarde, 10/5/2010 8:27:31 AM]
what chapter are you in?
Are you playing the regular story or Jimmy's?
Jimmy's has it all unlocked from the start.
as for the regular story, I'm guessing you'll have too wait until a certain year for it to be unlocked. that or it might be that it doesn't unlock at all.
Currently in the process of redoing the game after an install, so I cant say for sure.