Daytona Twin Tuner II - 2012-2017 FXD & ST W/CAN BUS — Harley-Davidson Dyna Street Bob, Dyna Fat Bob, Dyna Wide Glide (2012-2017)

The Daytona Twin Tuner II is a programmable engine management module for 2012-2017 Harley-Davidson Dyna models with CAN-bus electrical systems. It allows independent tuning of fuel trim across RPM and throttle ranges, plus spark retard up to 10° to combat pre-ignition knock, controlled via pushbuttons and a daylight-readable LED display.

Features

• Fuel trim adjustment across RPM and throttle position ranges
• Spark retard up to 10° to prevent pre-ignition knocking
• Daylight-readable LED display
• Up/down pushbutton control interface
• Fits 2012-2017 Dyna with CAN-bus electrical systems

Specifications

• Brand: Daytona
• Manufacturer Part #: 16201
• Length: 5.9 in
• Width: 7.3 in
• Height: 1.9 in
• Weight: 0.59 lbs

Fitment

Fits 2012-2017 Harley-Davidson Dyna (FXD) models equipped with CAN-bus electrical systems. Not legal for use in California on pollution-controlled vehicles — verify local emissions regulations before installation.

Frequently Asked Questions

Is this legal to install in California?

No — this tuner is not legal for use on California pollution-controlled vehicles. Check your state and local emissions laws before installing.

Can I tune fuel and spark independently?

Yes. The Twin Tuner II allows separate fuel trim adjustment and spark retard (up to 10°) across different RPM and throttle ranges.

Will this work on my 2018+ Dyna?

No — this part is for 2012-2017 Dyna models with CAN-bus systems. Newer model years require a different tuning solution.

What's included in the box?

The Twin Tuner II module with pushbutton interface and LED display, plus mounting hardware.

Do I need any special tools to install it?

Installation requires basic electrical connections to the bike's CAN-bus harness. A shop manual or Daytona installation guide is recommended.