Quote:
Originally Posted by 66DeuceLS1
Was this the competition axle back system? What is AFM?
I ordered mine and cannot wait to get it! Then time to install that and my Magnaflow x-pipe too...can't wait to see how much it changes the sound.
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Yes Competition Series, Active Fuel Management allows the engine to operate in eight or four cylinder modes for increased fuel effiency. AFM (AFM) operates by energizing the valve lifters to be on or off. When in four-cylinder mode, the valves are closed and the fuel supply shut off. In the 4 cyl mode the exhaust has a weird note before it changes back to 8