Success: You have added Range Technology AFM/DFM Disabler - GM Vehicles - NEW - Cylinder Deactivation Delete to your shopping cart!
Southwest Speed New Range Technology AFM/DFM Disabler (Blue). Disables Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) on compatible GM vehicles. Improves throttle response and prevents cylinder deactivation.
| Category | Other > Automotive > Performance parts & accessories |
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