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Modern cars have become increasingly complex, with many technologies working together under the hood. One such system is Active Fuel Management (AFM), which shuts off part of the engine under certain driving conditions to improve fuel economy. While AFM can benefit fuel economy, many car enthusiasts dislike losing power and performance. If you own a GM vehicle with AFM and want to deactivate it for more power, an AFM delete kit is the solution.
In this article, we will walk you through an AFM delete kit for your GM vehicle. We will discuss what components you will need, the steps to remove the AFM system, and how to ensure your vehicle runs properly without AFM. An AFM delete kit is a great way to unlock more power and performance from your GM truck or car at a fraction of the cost of a dealer-installed delete kit.
The Components You Will Need
To construct an AFM delete kit, you will need the following components:
- AFM solenoid - The solenoid is the part that controls the oil pressure to the cylinder deactivators. We will remove this to deactivate AFM.
- AFM wiring harness - The harness connects the solenoid to other parts of the engine management system. We will modify this harness to bypass the solenoid.
Removing the AFM Solenoid
To remove the AFM solenoid, you must first locate it on your engine. The solenoid will be a cylindrical component with electrical connectors on each end. It is typically mounted on the engine block near the cylinder heads.
Once you locate the solenoid, disconnect the negative battery cable to avoid electric shock. Note how the wiring harness connectors are attached to each end of the solenoid. Take a photo for reference if needed.
Detach the wiring harness connectors from the solenoid. Then remove the mounting bolts or studs that secure the solenoid to the engine block. The solenoid should now be removable-take it out and set it aside.
Modifying the Wiring Harness
With the solenoid removed, we must modify the wiring harness to bypass the solenoid connector. Use a wiring diagram to locate the wires connecting to the solenoid terminals. You will need to splice these wires together so they can connect directly.
There are a few ways to splice wires, including crimp connectors, wire nuts, or butt connectors. Crimp connectors offer the most secure connection. Clean and strip about 1/2 inch of insulation from the ends of each wire. Attach the solenoid terminal wires using a single heavy-duty crimp connector.
Tuck the spliced wiring harness back into place along the engine bay. Ground the loose ends of the splice by wrapping tightly with electrical tape. This completes the deletion of your AFM system.
Reconnecting Everything
Reconnect the negative battery cable and start the vehicle. Check for any trouble codes or warning lights indicating a problem with the engine. Allow the vehicle to idle for a few minutes to check for proper oil pressure. There should be no signs of the oil light coming on or knocking sounds from the engine.
You have installed a properly functioning AFM delete kit if everything checks out. Be sure to drive cautiously to allow the computer to relearn the new fuel system parameters. Your vehicle's drivability, power, and performance should now be back to normal without the interference of AFM. Your AFM delete kit is complete and ready to take full advantage of your engine's power potential.
In summary, you can complete an AFM delete kit for your GM vehicle by removing your AFM solenoid and wiring harness and bypassing the AFM system. Your engine will run more smoothly and powerfully without AFM continuously switching cylinders on and off. An AFM delete kit is an easy, effective way for GM vehicle owners to unlock more performance at an affordable price. With some mechanical ability and this guide, your AFM will be deleted quickly!
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