The Hondata s300 Version 3 is a plug-in module for the OBD1 factory Honda Engine Computer (not included) for manual transmission vehicles that vastly expands the capabilities of the factory ECU. Forced induction, data logging, real-time programming, Bluetooth, and engine protection are but a few of the comprehensive s300 features. It was designed, manufactured, and assembled in the USA.

The S300 uses SManager software for tuning and data logging. Warning: Within the USA, this product is legal only for racing vehicles, which may never be used on a public highway.  

• 8 analog inputs.(datalogging only)
• 1 digital input. (datalogging only)
• Additional security to help identify and prevent theft
• Datalogging memory doubled in size for up to 2 hours recording.
• Non battery memory backup for greater reliability and longer life.
• On board calibration storage.
• USB and Radio technology connection for speed and compatibility
• SManager Windows based software for parameter & table editing, calibration uploading and datalogging.
• Real-time updating of ECU parameters & tables.
• Built in calibrations for common engine combinations
• Built in datalogging to a laptop
• On board datalogging memory (4 MB memory, 20-240 minutes datalogging) with trigger conditions.
• Adjustment for different sized injectors, with overall fuel trim.
• Configurable for any MAP sensor (to 5 Bar and above)
• TPS based table lookup for ITBs
• Engine protection from over boost.
• Expanded fuel and ignition tables to 60 + lbs boost and 11,000 + rpm
• Three multi purpose outputs for nitrous control or similar
• Supports lambda tracing from a wideband o2 (PLX wideband recommended)
• PWM output for boost control with fixed or gear based boost.
• Dual tables for high/low octane calibrations etc.
• Two analog inputs for wideband, EGTs etc.
• High and low speed 24 x 20 ignition and fuel tables for correct VTEC tuning
• Injector size fuel trim
• Fuel trim for starting, throttle tip in and individual cylinder trim
• Rev limiter with fuel cut or fuel and ignition cut
• Launch control with anti-lag
• Full throttle shift
• Adjustable VTEC window with load and throttle control
• Secondary intake runner control
• Adjustable idle speed
• Adjustable boost cut with hot and cold settings
• Shift light
• Closed loop control
• Air temperature compensation
• Water temperature compensation
• Fuel and ignition correction based on gear
• A/C shutoff conditions
• Closed loop
• Three general purpose outputs for nitrous control, quad boost control or similar
• There are rectangular frame ECU (US)