Daytona Twin Tec TC88A Ignition (Standard and EX Models) for Harley-Davidson Twin Cam
Unlock superior performance and reliability for your carbureted Harley-Davidson Twin Cam 88® (2004-2006 models with single 12-pin Delphi® connector) and select Sportster® models with the Daytona Twin Tec TC88A Ignition Module – available in Standard (race) and EX (emissions-legal) variants.
Precision-engineered in the USA, the TC88A series represents Daytona Twin Tec's advanced ignition technology for V-Twin engines. This plug-and-play module directly replaces the stock ignition, offering fully programmable timing curves, enhanced diagnostics, and robust features tailored for everything from stock setups to high-performance builds.
Key Benefits:
- Wide Timing Advance Adjustment: Easily tunable via rotary switches for initial timing (±4°) and advance slope, accommodating stock engines to highly modified high-compression or big-bore setups.
- Selectable Multi-Spark Mode: Delivers multiple sparks at low RPM for quicker starting and smoother cruising performance.
- Superior Compatibility & Diagnostics: Fully supports OE sensors, J1850 data bus, tachometer, turn signal/security module (TSM/TSSM), and displays diagnostic codes via the check engine LED – no expensive scan tools needed.
- Built-In Data Logging: Records the last 30 minutes of operation (RPM, speed, manifold pressure, advance, battery voltage) for precise tuning and troubleshooting.
- Enhanced Tach Support: Provides optional 12V square wave tach signal compatible with 1999-2003 style tachometers for easy retrofits.
- Durable Construction: Billet aluminum housing with black anodized finish for heat dissipation and longevity; protected coil outputs against short circuits.
Model Differences:
- TC88A Standard (Race): Offers a slightly wider advance curve adjustment range for maximum performance tuning – ideal for off-road or race applications (not legal for pollution-controlled vehicles in California).
- TC88A-EX: CARB E.O. certified (D-641-1/D-641-3) for 50-state street legality, including California; perfect for emissions-compliant street bikes with excellent tuning flexibility (sufficient retard for detonation control in high-compression builds).
Easy plug-in installation requires no wiring modifications on most models. Optional PC Link software and USB interface allow full custom curve creation for ultimate precision.
Whether you're restoring crisp throttle response on a stock Touring bike, building a high-output custom, or ensuring street-legal compliance, the Daytona Twin Tec TC88A delivers smoother power delivery, better fuel efficiency, and rock-solid reliability. Upgrade your Twin Cam ignition to professional-grade performance today!
(Note: Kits available including high-output coil, plug wires, and USB interface. Professional tuning recommended for modified engines.)
