Saturday, February 11, 2017

Aftermarket / Chipped ECU

Aftermarket ECU

SpoonP73-0030-Z1, etc.
J's RacingP73
Apex'i Power FC
  • S300 does not support data transfer via diagnostic connector
  • K-Pro not physically compatible with current Hondash Bluetooth scanner

  • *Hondata ECUs equipped with an internal Bluetooth transmitter will be supported in future Hondash app version, coming Q1/2 2020

    Chipped Honda ECU

    In case of chipped ECUs (P06, P08, P27, P28, P30, P75 etc.), compatibility with Hondash depends on:

    ROM Editors

    ROM EditorCompatibleRemarks
  • must use classic version (gold version not compatible)
  • datalogger plugin (Plugins » Enhancements » Quick Datalogger + RTP) must NOT be added to the map (ROM) before flashing a chip
  • Ectune, Neptune
  • employed datalogging solution circumvents the OEM diagnostic connector
    and relies on custom full duplex interfacing with proprietary communication protocol
  • possibility of compatibility with official Hondash Bluetooth scanner is under investigation


    • jumper J12 (or J4) must be present on the pcb (zero ohm resistor), if it was removed, replace it with a wire (see pictures)
      • P28, P30 (non-JDM rectangular chips): J12 jumper
        hondash J12 jumper 1
        J12 - replaced with a wire
        hondash J12 jumper 2
        J12 - factory stock zero ohm resistor
      • P30 (JDM square chips): J4 jumper
        hondash J4 jumper
        J4 - replaced with a wire
    • jumper J1 must be connected in order to use an external modified map (ROM) stored on a EEPROM chip.
      However if the pcb jumper J12 (or J4) is connected as described above and you're still not able to get Hondash to communicate (due to used incompatible Rom editor) and you want to restore compatibility with Hondash at any cost, just remove jumper J1. Main processor should fall back to using an internal stock map (ROM) instead of external one stored on EEPROM chip. Some users also install a switch instead of J1 jumper to switch between internal(stock) and external(modified) maps on the fly.
      Please be advised, if your engine is heavily modified (high lift cams, turbo, etc.) it's not recommended to run it on a stock map outside of low engine load conditions (idle, part throttle), take actions at your own risk.
      hondash J1 jumper
      J1 jumper

    OBD2A/B to OBD1 conversion harnesses

    • make sure that the communication 5 V wire in DLC diagnostic connector is correctly connected to a ECU pin (described as "K-line" or "TXD+RXD") by tracing it manually using multimeter's continuity test
    • there are a couple of pins that output 5 volts, tracing the wire physically and making sure it's the correct one is mandatory, because it can read 5 volts even if it's connected to a wrong pin
      hondash bluetooth interface obd1 ecu pinout
      OBD1 ECU pin-out