E36 Ignition/Injector Shunt Resister & Link PnP Feedback

[My5t3ryM4nN]

Hi,

There's a shut resistor on the factory engine harness that goes to an engine ground. It's located in the center wiring tray by the injectors/coilpack wiring. Is this resister still required to run the car correctly or can it be removed? The insulation of it is failing and there's not exactly a OEM replacement at this point due to it's age.

I've attached a photo of it for reference, let me know you're thoughts. 

Thanks!

[Adamw]

Have you got a wiring diagram to show where this is used in the circuit?  Our M50TU wiring diagram doesnt show a resistor in the injector or coil wiring.  

[My5t3ryM4nN]

Finally got to sit down and go through the wiring diagram, I've attached a photo of the page from the BMW electrical book I have.

It's shown as a 2W 240ohm resister that ties back to the 6 ignition coils and pin 15 of the ECU.

 

 

[My5t3ryM4nN]

Hi,

Just wanted to bump the conversation @Adamw

Thanks

[Adamw]

I think it will be best to get rid of the resistor and connect that common point (x6900) where all coil grounds and ECU 15 terminate directly to the head somewhere.  

[Greenday694]

I was curious about this myself. That resistor was used for the original Bosch motronic. To send a low voltage signal back to the DME so it could confirm that the coil actually fired.

But I guess since the link ECU does not use that, I guess it would be okay to ground the secondaries from the coil directly to the Head. Should give it a slightly hotter spark as well. Not sure if this would cause any electrical interference in the rest of the system?