Dynatek 2000 Tc88-3 Digital Performance Ignition System For Harley The Tc88-3 is a single fire, fully PRE-programmed performance ignitions with 16 programmable advance curves and 8 Rev limiter settings. Features: Single-fire, programmed performance ignition 16 programmable advance curves in three groups 8 rev limiter settings in 250 rpm steps from 5750-7250 rpm All functions offer full digital accuracy Compatible with stock and performance coils Less than 1 ohm resistance Coil current constantly monitored to provide constant full spark energy Uses all stock sensors and connectors Note: Fits Carbureted models only.