So this could be the rich trim issue separate from the sold start issue - unless it is causing a vacuum leak ? due to more vacuum than is expected is that possible?I've seen other cases where the O2 pilot mod has caused rich fuel trims.
Is the root cause of your oil consumption problem carboned up oil control rings on the pistons or a faulty CCV?
How would adding extra vacuum to the CCV stop oil bypassing the carboned up oil control rings? There have been a couple of recent threads on soaking the pistons or running cleaner through the fuel to clean the carbon deposits off the pistons etc. Do some research.
If the CCV oil return tube is blocked, or the dipstick tube section of the oil return is blocked, the returning oil would have nowhere to go, so it's off up the CCV system to the inlet manifold. How would the O2 pilot mod fix this. @Sapote and @The_Fixer what is your experience with the O2 piolet mod?
Is it possible that there is a vacuum leak and is being covered up (in the data logs by the rich running) and that is the (potential) cause of my cold start issue ?
I will look into the issue CCC is on my list to do but since this problem came along I started looking into this - I know the o2 mod is a "band aid" fix
lets se what the others have to say regarding the o2 mod