Ok I had my tbss tuned yesterday by Nic D and let me tell you, I am extremely impressed! I just added a 4" fwi and pacesetter headers and had him retune it. I had a tune from Brian at pcmforless that just had way to much timing! About 8 degrees over all! It used to pull during wide open throttle sometimes up to 14 degrees and yesterday while driving it home in 113 degree weather with the temp gauge reading 223, after the new tune it maybe pulled half a degree. I highly recommend Nic D for any az guys. He really knows his stuff! Also if you decide to go through pcmforless make sure Alvin does it and not Bryan. There were a lot of things wrong with my tune from Bryan. Nic did have a lot of good things to say about Alvin so please do not let this discourage you from using Alvin. All of my bolt on's are from them and they really know there stuff. Alvin and Kelly still have great customer service and I will still buy any performance parts I can from them.