I was wondering if I have a 99 5.3L and a buddy with a 02 5.3L and another buddy with a 01 5.3L and my dad has a 01 6.0L If we all went in together and bought the ls1 "unlimited" type could we all use it on our trucks? Or is it like a hypertech type of deal?

 

You can do that with ls1 edit. I am not how price structure si set up. I suggest go with HP tuners.

 

Can you do that with th HP tuner?

 

Yes, basicaly you need support for three different years. $500 for the first two years and $199 fir each additional year.