Twin Tuner II / '01-'13 Models

The Daytona Twin Tec Twin Tuner II adjusts fuel and ignition timing on '01-'13 Delphi equipped Harleys through onboard buttons, with no laptop required.

No Shipping to California.

Most tuning devices assume you own a computer and want to use it. The Twin Tuner II does not: mode and up/down pushbuttons on the unit itself let you trim fuel by RPM and throttle position, and a daylight readable LED display shows what you have changed. That makes it the practical choice when the goal is compensating for an exhaust and air cleaner rather than chasing a dyno number.

What the Twin Tuner II Can Adjust

Fuel can be added up to 30 percent or subtracted up to 20 percent, and spark timing can be retarded up to 10 degrees. That range covers the usual reasons a bike needs tuning: high compression pistons or heads, a camshaft change, a free flowing exhaust, or a low restriction air filter. Unlike the original Twin Tuner, this version adds ignition timing control on top of fuel trim.

For finer work there is an advanced path. An optional USB interface and PC Link Tuner software allow precise adjustment and independent front and rear cylinder trim. Pair it with the Twin Scan II+ tuning aid and you can read real time air fuel ratio corrections, then copy those corrections straight into PC Link Tuner.

Twin Tuner II Specifications

• Fuel adjustment range: add up to 30 percent, subtract up to 20 percent
• Spark retard up to 10 degrees
• Onboard mode and up/down pushbuttons with LED display
• Independent front and rear cylinder trim in advanced mode
• Optional USB interface and PC Link Tuner software
• Compatible with Twin Scan II+ tuning aid
• Plug in installation, no splicing, cutting or crimping
• Dimensions: 4" L x 2" W x 1/2" H
• Fitments: '01-'11 Big Twin and '07-'13 Sportster except '08-'11 Touring, or '08-'13 FLHT, FLHR, FLTR and FLHX