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ThunderMax 309-485 ECM Kit for 2004–2011 Dyna® Models
For EFI-equipped 2004–2011 Harley-Davidson® Dyna models.
Replace your factory engine control module with ThunderMax EFI management and AutoTune technology. The 309-485 combines a replacement ECM with wide-band oxygen sensors to monitor exhaust oxygen and adjust fueling as you ride. Kit
5.0
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Great product, Great Company will be putting a ThunderMax on all my Harley Davidson!!