The s300 is a plug in module to the OBD1 factory Honda Engine Computer (ECU) which vastly expands the capabilities of the factory ECU. Forced induction, datalogging, real time updating of parameters, engine protection are but a few of the s300 features. Note that there is a rectangular frame ECU version of the s300 and a square frame ECU version (s300J)

Features

• Fits inside the ECU 
• Made in USA 
• Built on the proven s100/s200 code base 
• USB connection for speed and compatibility 
• SManager Windows based software for parameter & table editing, calibration uploading and datalogging 
• Real-time updating of ECU 
• Built in calibrations for common engine combinations 
• Built in datalogging to a laptop 
• On board datalogging memory (2 MB memory, 20-60 minutes datalogging) 
• Adjustment for different sized injectors, with overall fuel trim 
• Configurable for any MAP sensor (to at 5 Bar and above) 
• TPS based table lookup for ITBs 
• Engine protection from over boost
• Expanded fuel and ignition tables, both in rpm and load, to 60 lbs boost and 11,000 rpm (these are not the upper limits) 
• Launch control with anti-lag 
• Full throttle shift 
• Three multi purpose outputs for nitrous control or similar 
• Supports lambda tracing from a wideband o2 (PLX wideband recommended) 
• PWM output for boost control 
• Dual tables for high/low octane calibrations etc 
• Two analog inputs for wideband, EGTs etc