Ok, so i shelved my old tuner, and i broke down and bought the SCT X Cal 2 from brenspeed. ONe question i have b4 i get it. If i change my gears will have have to buy a tune for that, or does the device come with a option to change my gears? ALso, if i change my tire size, will i have to get another tune from them as well?
OH, and how well did your throttle response change from the tune?

Cant wait till it comes, seems alot of you guys are liking your results


07 Mustang GT grey
K&N CAI
Flowmasters axle back
30% tint
black 12' racing stipes
Black side window louvers
black rear window louver

 

You can change for tire dia & gears ratio yourself.As in throttle response you will notice a big difference, esp your tune is from Brenspeed.The 4 top tuners is Brenspeed, Bama, Evolution & VMP for tunes sent by mail....Can't go wrong with these guys.....