Hondata

I have my S300 does not go online and the datalog does work also when the engine is running

When I turn my engine off,everything works normal

I use an M w pro 10 ignition and BKR9EIX plugs.

What else I can do to fix this problem?

Thanks

The problem is caused by interference from the aftermarket ignition system. Where is it located?

It is located behind the rh headlamp and my car is rhd so ecu is on the lh

Try returning the ignition to stock, if that resoves the problem you know it was the aftermarket ignition system.

Yes but I need to fix the problem not to change the ignition

Step 1 is to see if the ignition is the problem as it is the most likely cause.