Thunder Heart Performance Engine Control Module with Integral Auto Tune System — '25 Softail

• ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness
• 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
• Easy installation: replace the factory ECM, install new oxygen sensors and harness, load the correct map for your bike, and ride
• 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
• Improves throttle response, exhaust sound and driveability
• Rider can adjust idle speed, rev limit and speedometer calibration
• Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup map
• Works with all popular exhaust systems and is compatible with high-performance camshafts
• Supports turbo, nitrous and supercharger applications
• Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation
• New maps, software, firmware updates, map analysis and tech support available online at no charge
• Made in the USA
• Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their O2 sensor port bungs.
• Does not require dyno tuning.

Color/Finish

Black, White

Base Color

Black

Programming

Pre-Programmed, Programmable

Riding Style

Street

Type

Air/Fuel Ratio

Units

Kit

Shipping weight

2.9 lb

Package size

11 × 9.5 × 2.8 in

Country of origin

USA

Salto part #

1020-4290

Thunder Heart Performance part #

309-606

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

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

Is it in stock?

Yes — it’s in stock 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?

It’s listed 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 Thunder Heart Performance?

Yes. It’s new and genuine, straight from Salto — Thunder Heart Performance part #309-606.