Full custom tunes can run anywhere from $250-500 depending on the shop and what they actually need to do. The big question I have is why do you want a custom tune? If your car is fairly stock it will not be worth the cost. On a near stock car you might pick up 10 hp if you are lucky.
__________________
GET IN THE RING!
RIP tripsevn7
4/1/77 - 7/27/08