![]() ![]() You can tell if your motor has DOD by peeking at the valley cover. 28 Sept 2021 How do I know if my motor has DOD? AFM reduces gas usage anywhere from 5%-15% so removing the system will result in worse MPG’s. The only mentionable downside to disabling AFM is the decreased gas mileage it causes. When installing an AFM delete kit: You MUST upgrade to a non-AFM camshaft because the cam lobes in the four AFM cylinders are ground differently. It replaces the AFM components with standard parts. What does a AFM delete kit do?Īn AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. It allows a V6 or V8 engine to “”turn off”” half of the cylinders under light-load conditions to improve fuel economy. How does GM DOD work?Īctive Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors. Not doing so will cause the vehicle to revert to 4 cylinder mod. NOTE: Once you install a DOD/AFM delete kit you must tune the vehicle. It was used on certain 5.3L, 6.0L, and 6.2L engines starting in 2005 and continued until the release of late-model direct-injected engines. 21 Can you turn off cylinder deactivation?Īctive Fuel management (AFM) and Displacement on Demand (DOD) are the same thing: a system developed by General Motors that deactivates cylinders during periods of low engine load. ![]()
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