ThunderMax®

ThunderMax® is a performance ECM designed specifically for EFI equipped Harley-Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary Auto Tune technology thru wide-band oxygen sensors to deliver unmatched performance.

ThunderMax® is designed to produce the most efficient way to keep the most demanding racing engine properly tuned. Common problems of specific load areas being too rich or lean are resolved by the Wide-Band sensor feedback.

ThunderMax® Features:

• Increased Performance
• Adjustable 2-Step Launch Control
• Adjustable Idle Speed
• Rev Limit Control
• Injector timing
• Gearing calculator
• Grudge box compatibility
• 100% Engineered and Made in the USA

ThunderMax® System Includes:

• Two (2) Wide-Band Bosch 5-Wire Oxygen Sensors (18mm)
• Auto Tune Connection Harness*
• USB Communication Cable
• ThunderMax® Quick Start Easy and Printable Comprehensive User’s Manual

ThunderMax® modules are designed for use on motorcycles for closed course competition only. Modules not labeled “ThunderMax 50” are not CARB or EPA compliant for highway use products.

Modules marked ThunderMax® 50 are CARB Approved for Highway use motorcycles.

ThunderMax® Tuning products are manufactured by Thunder-Heart Performance Corporation.