Hmmm, got me??Well I loaded the 2000 tune from their site and it doesn't kill the truck anymore, It turned 3220, then I messed with some settings and got it to around 3500, then nothing more.
i guess next step will be to buy a redline. This sucks! It even said on there website: With this program it stops the issue of the truck dieing, or something along those lines. I really wish they would figure this out!
Also just went out and tried the comp4k tune in 4th gear on level 10 100% fueling i was able to get to 3610 but then it started poping and missing real violent! But until then it pulled HARD!!!
NO smarty! And i will go with a redline before i get a smarty. I dont get what the smarty does to get it to 4k