Can I run multiple Sensor ground wires into the Pin 22 options port? I currently have my Wideband running to Pin 22, but am experience a decent amount of VTPS noise on my 92 Turbo Miata, can I run the ground for the VTPS and splice onto the Pin 22 wire? Or will that also create a issue since it’s sharing a ground

 

I have every one of mine running to a ground bus that grounds to the ecu sensor ground. I'm not an expert but it has not caught on fire yet.

 

You haven’t had any issues with sensor noise at all?

 

I don't have an answer but I do have the same question. I do currently have both my wbo2 sensor ground and a fuel pressure sensor ground grounded to the options port ground on my ms3x. Seems to be working fine, but I plan on adding 2 more sensors and was wondering if I can ground them all to the same wire.

 

sure, just don't connect any power ground to it.