do these two stack well? i have an 07 5.9l made after june 06 so tst wont work....any other reccomendations on what are good stacks

 

I ran it on my 06.5 and according to the dyno it only made more torque on my truck but others have seen a difference. if you want more power get a turbo and injectors they help out alot along with the smarty. im in the same boat as you the tst doesnt work on my truck very well either

 

I'm running that stack now, I am running the puc on the lower setting because its more then enough, when I turn it up to 90hp you definetly know it..

 

you might keep in mind an edge ez will do the same thing also. I ran the puck for a little bit and also ran the ez and neither one made a huge difference on my truck that I could tell.