yellowgtstang18

So the only way i can get 4.10s is to get a tuner, the speed cal will not woirk with my car. i have a 01 gt auto???

Hash06

i'm not sure but a tuner would be a good investment with the auto. firm those shifts up

djdalfaro

there is no reason not to get a tuner... but I forget if that year had the mechanical speed cal or computer one... if it's in the computer get the tuner... if it's mechanical get the tuner and mechanical speed gear.