Hondata S300
Discount for purchase of two or more.
The S300 is a plug-in module to Honda’s Engine Computer (ECU) which adds many capabilities. Forced induction, datalogging, real time updating of parameters and engine protection are but a few of the features.
- Fits inside the ECU
- 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
- 3 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.
- $495
- $295 for additional socketed OBD1 P28 with or without built-in OBD2 adapter
Your ecu must be prepped for installation. If you are unable to do this, please contact us or a local installer for help.
To have us prep your ecu and install the S300, please click below:

