Looking at adding a set of TSP LT's to my 2018 5.3 silverado. Anyone have any numbers to see if they are worth the money?

 

Maybe 20-25 is my guess. That and E85 and maybe a 6.2 tb and especially a tune either way. Not much cheaper hp per dollar in my opinion. Oh, not sure if anyone can tune 2018 yet.

 

2014-2018 is fully supported. 2017-2018 require internet connection with HP Tuners and you must send in the TCM to be unlocked to be able to tune those.

2019 are not supported for the new body style at least and likely not for a long time. It's a whole new controller that will be very expensive to tune if some sort of work around gets created.