Datalog interferance

[jdm97r]

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

[Spunkster]

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

[jdm97r]

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

[Spunkster]

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

[jdm97r]

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

[Spunkster]

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