Very glad I got it!
Hardest part of installation is running wires and stuff. Bought this tuner after reading reviews on others.Bully Tech support is very helpful! Installed performance tune and drove to work for a week. MPG went from 17 to 20! Installed tow tune and pulled my 5800 lb travel trailer with full water tank.Tow MPG went from 9 to 13 and went faster up the hills with less downshifting! The driving coach takes a few drives to get used to but not a biggie!
Range Tech. AFM Disable
Just as the instructions stated "Plug-n-Play". This device is incredible. I received it on time and plugged it in with instantaneous results. I had shuddering, engine overloading, oil burning and cruise control intermittently operating. This device fixed "ALL" of the issues. My 2007 Tahoe has 167,000 miles and runs just as it did when it was new. Recommendation, have all of your oil's and fluids replaced, replace spark plugs, clean all sensors with appropriate cleaners.