Friend had a SCT tune for his '11 GT. Thing really woke the car up, shifts were great for the auto. SCT says it gained 16.5 peak rwhp and 30 peak rwtq. Then he got a vendors e mail tune. The tune really felt no different than the SCT tune. Car is stock. When not running a CAI or other mods are the e mail tunes from Bama, BBR, Brenspeed ect just the same as the SCT canned tune? All make about the same power output and this is the second car with 2 different e mail tunes that feel very similar to the SCT canned. First kid ran a 12.48 and a 12.50 with the SCT canned tune then ran a 12.63 and 12.65 with the vendor e mail tune.