Bully dog platinum
The system is awesome. It's easy to install and it delivers the horsepower. It's night and day on how it makes my 02 Tahoe 4x4 run. It saves on the gas and gives the vehicle world's more power. I'm very happy with the money I spent and the outcome of the preformance. You can't go wrong with this setup.
The device does what it says. It disables the AFM and takes away the hesitation and the sluggishness. I used to have a 2005 NBS Tahoe and I regretted exchanging it for a 2013 NNBS Tahoe due to the sluggishness caused by the AFM. Now I am enjoying the newer truck due to more responsive throttle. I did notice a loss of 0.5 MPG but it's worth it for the truck to not feel like a big slug.