Thundermax Fuel InjectionUSB Serial Port Adapter f Gen II T Max ThunderMax claims to be the most powerful, self tuning fuel management system designed specifically for fuel injected Harley Davidson motorcycles. The ThunderMax EFI system with AutoTune is purpose built to deliver uncompromised performance. It works on any bike, no matter if it is a plain stock one, has a performance exhaust, and or performance air cleaner or any other performance upgrade installed. The AutoTune
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