ThunderMax Engine Control Module Kit with Integral Auto Tune — '21-'24 Softail

Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their oxygen sensor port bungs.

• 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 oxygen 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 oxygen 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 USA

Model

ThunderMax

Programming

Downloadable Maps, Autotune

Riding Style

Street

Type

Air/Fuel Ratio

Color/Finish

Black

Units

Kit

Base Color

Black

Features

Closed Loop, Includes Oxygen Sensor

Shipping weight

2.6 lb

Package size

11 × 9.5 × 2.8 in

Country of origin

USA

Salto part #

1020-3515

Thundermax part #

309-592

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

California: this part can’t ship to a California address.

Is it in stock?

Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.

How fast will it get to me?

Usually 2–4 business days by ground.

Will it fit my machine?

The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.

Is this genuine Thundermax?

Yes. It ships new from the same distributors the big online stores buy from — Thundermax part #309-592.