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requires less voltage
Most customers convert belt drive sportsters to chain drive for best performance
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AGM construction offers a formidable blend of power
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ThunderMax Fuel Tuner for 2017-2020 Harley-Davidson Touring Big Twin Lighting (Light) requires less voltageThunderMax Fuel Tuner for 2017 2020 Harley Davidson Touring Looking for a do it all tuner? The ThunderMax is innovative because it's not a traditional tunerit's a complete ECM! Kit includes ThunderMax ECM with Auto Tune Module Plug and play harnesses Two wideband oxygen sensors ThunderMax software and communication USB cable Instructions Can benefit from dyno tuning, but it's not required if you choose to allow your ThunderMax to "learn" the correct
