Today I got the opputunity to meet Chris and Kirk, who are the two top notch guys that are bringing everyone the Vector Tune for the Trailblazer SS. All I can say is that you will need someone to smack the smile off your face when you drive your tuned TB SS. The truck is noticeably faster in every gear. Crisp and firm shifts every time. No more lag between the 1-2 shift when the factory tune normally pulls timing to reduce power. 1st gear is an animal, and 2nd and 3rd just pull harder and harder. Drive down the road at 40mph and punch it…. 1st gear down shift throws you into your seat and the engine races up to its new 6800-6900rpm shift point (the tach cant even keep up). By the time you look down, your are already well over 70mph. There is really no way to explain how hard it pulls in 2nd and 3rd compared to stock. This is one thing everyone has to experience for themselves. WOT is not the only imporovments made here. The part throttle response is 10 times better. You no longer have to get into the throttle hard to accelerate from 30-50. The low RPM gains are huge, and the chassis dyno results speak for themselves. I will tell you that this is an excellent tune, and there is no way you can beat it for $400. Chris and Kirk spent weeks perfecting it to bring everyone the best performing reliable tune you can possibly buy. Myself and the crew here at ET Performance proudly stand by their work.