http://www.mygen.com/users/dbruce/myz31/hks_evc_iv_boost_controller_install.htm
I found this one in about 20 seconds..........................
Taken from Apexi Website re the other device. May not be identical as this is for a newer version but probably about right.
The Rev/Speed meter GP is a complete multi function measuring device designed to measure and monitor data such as vehicle speed, engine RPM and elapsed times.
Standard features include: Engine RPM, Vehicle Speed, Travel Distance and battery voltage ( all which can be displayed in real-time graph mode, or analogue mode; 1-4 channels at a time). Peak Hold, Replay (60secs) Speed limiter cut, 0-100m/200m/400m time with trap Speed. 0-100km/200km/H/300km/h times. Mid Range Acceleration ( user can preset any range of speed to measure), Stop watch functions, Best Time Memory, RPM Warning, Speed Warning, RPM & Speed Outputs (for external devises requiring an RPM or Speed signal). Tire size correction ( for timing accuracy), and Vehicle weight input.