Ignition Timing Control
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Honda S2000, 2004 Honda S2000, 2003 Honda S2000, 2002 Honda S2000, and 2001 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.
The ECM contains the memory for basic ignition timing at various engine speeds and manifold pressures. It also adjusts the timing according to engine coolant temperature.