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FREE SHIPPING ON ALL ORDERS OVER $150 - JUST ADD TO CART (exclusions may apply)
FREE SHIPPING ON ALL ORDERS OVER $150 - JUST ADD TO CART (exclusions may apply)
THUNDERMAX ECM'S

THUNDERMAX ECM'S

by THUNDERMAX
$1,088.99 - $1,170.99
$1,088.99
$1,115.99
$989.99 - $1,170.99
$1,115.99

  • Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support, and free software and updates
  • Hundreds of maps are available to download for your bike (based on the model, engine size, exhaust system air cleaner, pistons, cams, etc.) - load the map of your choice and the integral auto-tune will do the rest
  • The software program allows live monitoring, recording, and examination of diagnostic codes and data logs including the number of starts, engine temperature, and rpm operation
  • Utilizes wide-band O² sensors and works as a closed-loop control system to continuously self-adjust and properly tune the motorcycle's air/fuel ratio for all riding conditions
  • ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs into the existing harness
  • Easy installation: replace the factory ECM, install new O² sensors and harness, load the correct map for your bike, and ride
  • New maps, software, firmware updates, map analysis, and tech support are available online at no charge
  • Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup maps
  • Works with all popular exhaust systems and is compatible with high-performance camshafts
  • The rider can adjust idle speed, rev limit, and speedometer calibration
  • Improves throttle response, exhaust sound, and driveability
  • Supports turbo, nitrous, and supercharger applications
  • Does not require dyno tuning
  • Made in the U.S.A.
  • Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their O² sensor port bungs.
  • This ECM uses 18mm wide band o2 sensors! If your exhaust does not currently have 18mm ports you will need to weld new ones in! Bungs available here!

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, and 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!
Every degree and a half of throttle; every 256 RPM, there is a fueling point that is automatically adjusted. That means more control and a smoother running engine. With the built-in barometric sensor, you never have to think about ambient air changes. WideBand O2 sensors constantly read the Air Fuel Ratio and give live, real-time feedback to the ECM. That means, no “accepting” the changes made to the map, once you key off the changes is written. The ThunderMax ECM is fully adjustable with our ThunderMax tuning software or can be used just by loading a base map. The choice is yours.

Click here to view software downloads!

DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION-CONTROLLED MOTOR VEHICLES.

IF FOR RACE OR OFF-HIGHWAY USE OUR CA EXHAUST WAIVER WILL NEED TO BE SIGNED AND RETURNED PRIOR TO SHIPPING. 

CALIFORNIA CARB WAIVER AVAILABLE HERE:

https://cdn.shopify.com/s/files/1/0157/0363/8064/files/CA_CARB_Waiver.pdf?573