• Drag part number: 1020-2664
• Manufacturer Number: 309-588
• 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 available to download for your bike (based on 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
• Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation
• Utilizes wide-band O 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 in to the existing harness
• Easy installation: replace the factory ECM, install new O sensors and harness, load the correct map for your bike, and ride
• New maps, software, firmware updates, map analysis and tech support 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
• 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.
• Does not fit 2020 Touring Models with Traction Control (RDRS)
• Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their O sensor port bungs.

• Product Name: Tuning System
• Units: Kit
• Riding Style: Street

2017-2020 Harley-Davidson Street Glide EFI FLHX 2017-2020 Harley-Davidson Road Glide Custom FLTRX 2017-2019 Harley-Davidson Electra Glide Ultra Limited Low FLHTKL 2017-2020 Harley-Davidson Road King EFI FLHR 2017-2020 Harley-Davidson Electra Glide Ultra Limited FLHTK 2017-2020 Harley-Davidson Street Glide Special FLHXS 2017-2020 Harley-Davidson Road Glide Special FLTRXS 2017-2019 Harley-Davidson Road Glide Ultra FLTRU 2017-2019 Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI 2017-2020 Harley-Davidson Freewheeler FLRT 2017-2020 Harley-Davidson Tri Glide Ultra Classic FLHTCUTG 2017-2020 Harley-Davidson Electra Glide Police FLHTPI 2017-2020 Harley-Davidson Road King Special FLHRXS 2017-2020 Harley-Davidson CVO Electra Glide Ultra Limited FLHTKSE 2020 Harley-Davidson Road Glide Limited FLTRK

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