Reviewed By Cody H (SODDY DAISY, TN) Reviewed for a 2004 GMC Sierra —10/9/2014 8:48 PM
Bought this tuner to go along with my full exhaust and intake. Made a very noticeable difference in power and the way the truck shifts. No mpg improvement that I've noticed, but not why I bought it. Would definitely recommend on GM trucks. Also allowing for custom tune is nice as well.
DiabloSport inTune I-1000 Tuner Sierra
Reviewed By Landon B (PLAINWELL, MI) Reviewed for a 2010 GMC Sierra —1/9/2015 4:29 AM
Overall a great product that is easy to use, has multiple capabilities, and flexibility in really give your vehicle a custom tune. I highly recommend have a custom tune done once you have loaded your first canned tune and put on the recommended mileage. It is the most noticeable increase in performance you will receive from this device!