Hondata

Send an email to supports <at> hondata.com with the following and I will issue an RMA and give you further
instructions:

Name:
Address:
Phone:
Email:
Serial#:
Description of problem:

include a link to this thread


I have sent one in. I am based in the UK. The ECU was purchased originally ...

Spunkster wrote: Tue Apr 22, 2025 12:50 pm Post pictures of the bottom of the ecu showing the soldering for the s300.

See attached :)

Okay. That’s good to know, I can only set registration info.
I am not able to upload a map when the ignition is on, I’ve tried this on two cars, one 92-95 civic obd1 without any modifications to loom and it’s a known good car. And one 96-98 obd2A civic with a rywire harness as per my original post ...

Spunkster wrote: Tue Apr 22, 2025 9:14 am Is jumper J12 cut inside the ECU?

Yes, J12 has been removed.
Can you confirm if I should be able to see it online in Smanager with it unplugged from the car ?

Hello

I recently purchased a second hand, unused S300 on a P28 ECU.

Upon connecting to the car, and powering up, I was requested to upgrade the firmware. That Was successful.
I then registered but still not able to upload or data log. I tried in another known goo car with a stock engine harness ...