DAYTONA TWIN TEC LLC Twin Tuner II Fuel Injection Controller — 4 in x 2 in x 0.5 in, Black – 02-07 Touring, 01-11 Softail, 04-11 Dyna, 07-13 Sportster

The Twin Tuner II fuel injection controller lets you quickly tune your motorcycle’s OEM Delphi fuel-injection and ignition systems to match performance parts and riding needs. 🔧

• Easily adjusts fuel and spark to suit high-compression pistons, performance heads, camshafts, free-flowing exhausts, and low-restriction air filters — add up to 30% or subtract 20% fuel and retard spark timing up to 10°.
• On-unit mode and up/down pushbuttons allow fuel trim adjustments across rpm and throttle-position ranges; the current fuel trim is shown on a bright, daylight-readable LED display. ⚡
• Advanced mode via the optional USB Interface and PC Link Tuner software enables precise fuel adjustments and independent front/rear cylinder tuning.
• Compatible with Twin Scan II+ tuning aid — ride the bike with Twin Scan II+, then copy air/fuel ratio corrections into PC Link Tuner for refined maps.
• Includes ignition timing control capability in addition to all original Twin Tuner features.
• Easy plug-in installation and setup with no splicing, cutting, crimping, or bulky interconnections; may be compatible with other controller maps.
• Compact size — only 4 in L x 2 in W x 0.5 in H, for straightforward mounting on most motorcycles. 📏

Whether you need quick on-bike adjustments or deep PC-based tuning, the Twin Tuner II provides flexible control over fuel and ignition to optimize performance upgrades. 📈