I only brought it up, because, it potentially could skew the AFR at idle speeds which could in an engine that had varying compression ratio between cylinders, cause the engine to misfire and shake. Just spitballing here, not looking for a fight.
I understand and I appreciate it. I think the system relies on a map signal and with a dual plan it could throw it off. But I haven't had any issues with air fuel ratio so far so I think the spacer is doing what it needs to do..