I have hundreds of time slips, we race this car weekly for 2 years now. Last year it was running 15.0s 14.90s on a stock turbo 104 octane race tune but that was in 50 degree weather. In the conditions we had last week the best it would do was 15.20s. And that 14.74 was on the first 93 gtx base tune we put in the car, we didn't get to do much more because it rained. Also we used a 5000 shift tune in the Trans, the GTX makes more power through the entire rpm range and we haven't even tried it up to 6000 yet where it should make even more power. We are confident it will go close to 14.0 in nice air with a race tune. And that's full weight, 3070 lbs, that's heavy, this car is a lot heavier than an Ls or Ltz. Once we get done I will pull some weight out and should go 13s