2011 AVALANCHE tune
Easy to install but be sure to follow instruction. (Pull proper fuses). Disconnect (8-4 cylinder) drop out. You will have a smother , quieter and more responsive engine. There are also two options to try the premium option and the regular option I have yet to try their premium option but I am very satisfied with the regular option. For my money it was well worth it.
my review on bully dog gt tuner
2010 f150 ,Easy installed no problem. So far I have gotten .8 more on MPG still working with it. I am useing the driving coach set my goal at 17 MPG was getting 15. Now its at 15.8 on my truck, on the tuner it reads 15-17.. have noticed more power & throttle response.. very happy with it.