Hondata S300 V3 Honda Programmable ECU
The s300 version 3 is a plug in module to the OBD1 factory Honda Engine Computer (not included) which vastly expands the capabilities of the factory ECU. Forced induction, datalogging, real time programming, Bluetooth and engine protection are but a few of the comprehensive s300 features.Designed, manufactured and assembled in the USA.
These are 100% authentic new S300 units directly from Hondata. We are an authorized dealer and distributor and only ship brand new serialized units that are 100% eligible for support and warranty. Hondata is strict about only supporting units that are purchased from authorized dealers and distributors so use caution when selecting a seller. New features for Version 3:
Ethanol content sensor support
Bluetooth for laptop programming/datalogging and mobile datalogging
2-4 times faster datalogging
Serial output for dashboards like the AiM MXL and Racepak IQ3 – (needs 230-vmefi-hond)
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 Bluetooth 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 (8 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
Closed loop control
Air temperature compensation
Water temperature compensation
Fuel and ignition correction based on gear
A/C shutoff conditions
Three general purpose outputs for nitrous control, quad boost control or similar
Real-time UpdateThe s300 can be updated in real-time with the engine running without affecting the operation of the vehicle. This means that calibrations and changes can be uploaded to the ECU very quickly (2 seconds for a new calibration, a fraction of a second for anything else), without interrupting the operation of the engine. Changes made in the SManager software are uploaded to the ECU instantly and you can see the effect immediately. The s300 does not use an EEPROM or equivalent, so you never need to open the ECU to change chips nor ‘burn’ ROMs. No EPROM programmer is necessary – you just need a laptop with USB port or Bluetooth capability.DataloggingThe s300 has datalogging to the SManager software built in via the USB or Bluetooth. Using a laptop or mobile device the various ECU sensors can be data-logged, viewed, graphed and saved for later analysis. Additionally the s300 has on board flash memory which allows a datalog to be made without a laptop, for later access and download. Multiple recordings can be made and stored in the s300 for a total of around 120 minutes of total datalogging time. An external switch can be used to start and stop recordings, or engine conditions can trigger recording. For instance in a drag race, the s300 can be set to start recording once the rpm is bought up to near launch rpm and automatically stop once past the traps and the rpm drops below a certain level.
ECU PreparationDetails on preparing the ECU can be found here. It is strongly recommended that you have this professionally installed. If the ECU has been previously socketed you run a high risk of damaging the ECU (lifting tracks or burning them).s300j Specific NotesPCS output is not present on the JDM ECUs and cannot be used for nitrous controls. All other inputs and outputs are present and can be used for nitrous controls. Boost control uses a different output pin on the JDM ECU.
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