Bigdawgmichael

I changed cams and put set of the 799 heads on it and now it want idle.. Cam @50 is 222-228 lift 550-555 112 lobe separation it's a supercharged 5.3 with a 2.80 pulley... I have the hp tuners pro but I downloaded a tune but when I go to write it, it tells me unlicensed vehicle.. I have put att serial numbers and product key.. When I connect to vehicle it's shows my vin and every thing..

JoeNova

Have you used HPT on the truck before? You have to license every vehicle you tune with it and use 2 of your credits.

rpturbo

iTrader: (47)

As long as you have a tune you licensed, you can take that downloaded tune, use the compare feature, and copy the differences over. Otherwise, you will have to license that tune as well, and that isn't a good idea.