Its hard to put into words on an internet forum how much better Mike's tune makes the V10.
I have a 2004 that I was blissfully happy with (I thought).
I just did Mikes 5 Star Tuner and a Y pipe package and its hard to believe I am driving the same truck.
My truck is FAST now (se sig for config).
Yes my truck is lighter than alot of the ones you see on here, but its pretty darn spunky for an 8000 lb truck.
It never ran like it does now, even when brand new (I bought it new).

Cant say enough good things about Mike's tunes, or his customer service.
Look no further. Get the 5 Star and enjoy.
HTH
jimmy p