Daytona Twin Tec Twin Tuner II Fuel Injection and Ignition Controller - Harley Dyna and Softail Models w/ CAN Data bus ('12-up)

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• Increases horsepower
  
• Improves throttle response
  
• Easy plug-in installation and setup
  
• Very compact size - only 4"L x 2"W x ½"H
  
• Compatible with Twin Scan II+ Tuning Aid
  
• Low cost

FAQs
Twin Tuner Series Fuel Injection and Ignition Controllers

What is the difference between the Twin Tuner and Twin Tuner II?

Both systems allow adding or subtracting fuel. The Twin Tuner II also allows you to retard spark timing up to 10 degrees.

For what applications do you recommend the Twin Tuner II?

If you are increasing the compression ratio above 10:1 or significantly increasing the engine displacement to over 100 CID, the spark advance table in the original equipment engine control module (ECM) may be too aggressive, resulting in spark knock. The Twin Tuner II allows you to retard spark timing up to 10 degrees to eliminate spark knock in these applications.

How do I select the system and initial settings best suited for my application?

Use the following flow charts to select the best system and initial settings for your application. The Twin Tuner series is appropriate for most Stage 1 (low restriction air filter and free flowing exhaust) and Stage 2 (performance camshafts) applications. For Stage 3 (increased displacement, high compression pistons, and ported heads), we recommend the Twin Tuner II series. Refer to the setup tables for initial setup recommendations.