Reviewed By Mike M (Keystone Heights, FL) Reviewed for a
—6/5/2012 3:03 PM
If you own a Chevy with AFM "Active Fuel Management" and would like to deactivate this system on your vehicle. THIS WILL DO IT! AFM allows the engine to go from V8 mode to V4 mode in an effort to boost fuel economy. I have a 2007 Avalanche LTZ and it would shudder/vibrate as is changed from V4 mode to V8 mode. It goes into V4 mode everytime you let off the gas at any speed above 30 mph, then shudders as it swithes back into V8 mode. VERY IRRITATING. I took the truck to my machanic, they could not fix the problem, ended up at the dealership. They reflashed the computer for $90 said that would fix it. No change at all. Finally decided to try the Superchips in an effort to change the shift points and pressures in the tranny to see if that would help. Got my new Flashpag, plugged it in and to my surprise was an option to DISABLE AFM. YES! Problem solved. Runs great. Well worth the money to me for this alone, all the added performance programs is a bonus. Very happy.