just got the truck back after having my RPM lvl 6 w/ Yank PTB3600, LS1 fans, t-stat, t-cooler, and tr-6 plugs. i had Matt (lt1z) do the tune on this thing finally and tuned in my ieatsrt8 intake and...WOW!!! ive only driven about 30minutes and i can tell its totally a different truck! way more responsive and quicker off the line. i am completly satisfied and amazed at the results Matt was able to achieve with my minor mods. He definitly knows what hes doing and i wouldnt hesitate to recommend him to anybody. Thanks Matt, ill enjoy my SS so much more now!