ThunderMax is an industry award winning, performance ECM designed specifically for EFI equipped Harley Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary AutoTune technology with wide-band oxygen sensors to deliver unmatched performance and rideability. ThunderMax comes 100% assembled, ready to install with no wire-cutting or splicing required. Simply replace the factory ECM and oxygen sensors, load a map, and enjoy your new ride!

 ThunderMax Benefits Include:

• Easy to Install & Simple to Use
• Increased Engine Performance & Motorcycle Rideability
• Cooler, Smoother Running Engine
• Adjustable Idle Speed & Rev Limit Control
• No Dyno Required - Automatically Tunes for Riding Style & Riding Conditions
• Never Outgrow It - Easily Accomodates Bike Changes (Pipes, Cams, and More)
• 100% Engineered & Made in the USA
• 3-Year Factory Limited Warranty