Saturday, February 11, 2017

Aftermarket / Chipped ECU

Aftermarket ECU

  • Spoon
  • compatible
  • J's Racing (P73)
  • compatible
  • Feel's (P73)
  • compatible
  • Apex'i Power FC
  • not compatible (uses proprietary communication protocol?)
  • Hondata (All versions)
  • not compatible (proprietary hardware and communication protocol)
  • AEM
  • not tested (probably not compatible, proprietary communication protocol?)

    Chipped Honda ECU

    In case of chipped ECUs (P28, P30, P06, P75 etc.), the compatibility with Hondash depends on the combination of used ROM editors and installed board jumpers. Check all following points.


    • jumper J12 or J4 must be connected (usually bridged with a zero ohm resistor), if it was cut or disconnected, reconnect it with a metal wire
      • P28, P30 (non-JDM rectangular chips): J12 jumper

        J12 reconnected with a metal wire

        J12 factory stock zero ohm resistor
      • P30 (JDM square chips): J4 jumper
        J4 reconnected with a metal wire
    • jumper J1 must be connected in order to use an external modified map (ROM) stored on a EEPROM chip.
      However if the other board jumpers (J12/J4) are 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 the compatibility with Hondash at any cost, just cut or remove this jumper J1. The main processor will fallback to use the internal stock map (ROM) instead of the external one stored on the 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.
      J1 jumper

    ROM Editors

    • CROME

      ROM editor can be forced to use stock Honda communication protocol and make compatible maps with Hondash. Just make sure that the datalogger plugin in "Plugins » Enhancements » Quick Datalogger +RTP" is disabled in the editor before exporting/uploading the map (ROM) to the ECU. However this works only in the Crome classic version, not in the gold version.

      ROM editors use their own proprietary communication protocols and thus all maps (ROMs) created in these editors are currently not compatible with Hondash. Cutting the J1 jumper is the only solution currently