displacement on demand in 09 2500HD?
#2
AFM or DOD
Why are u going to buy a 3/4 ton and be worried about mileage? Iv'e got a 1/2 ton with AFM or DOD (Advanced Fuel Management) and I hate it. I recently bought a tuner to turn it off. I sold my Duramax 02 two yrs ago and wished I hadnt I miss it.
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