Tuning Information and Common Questions

Electric Fan Patches

Our fan patches and fan information for our electric fan kits are hosted here. Choose the corresponding folder, right click and save the appropriate file.

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DOD/AFM and VVT Information

Displacement on Demand/Active Fuel Management (DOD/AFM) and Variable Valve Timing (VVT) DOD (also referred to as AFM) and VVT became options starting with Gen 4

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Electric Fan Patches

Electric Fan Patches Purchasing one of our LS1, C6, or SPAL electric fan kits? You will need to have your PCM patched in order to

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