Rich on CL after OL tuning

I tuned my car OLMAF. I have the AFR dialed in where I want it. .99-1.01 Lambda. I'm running MAF only because it just feels a little crisper.

As soon as I switch to CL if goes rich at idle. I scanned it in CL and then forced OL with the scanner and you can see the change. I did a copy paste mulitply % for the differences and it's not better.

I may be having senior moment but I'm lost.


Mods:

CAM- 236/242 617/613 111+2
SVO 30#, Fast 92, Ported LS2 TB, LTs, no cats, CAI, Nitrous(not important for this).

Not sure if this is a contributing factor, but I see the P0101 is set to "No error reported" Try setting it to "no mil light" instead
I know the P0102 and P0103 will cause trouble in that mode.

Thanks I'll give it a try. Anything else standout?

You have a hell of a car man. I watch your posts on CF...

Thanks man. about to start up another build thread on my car. I can't seem to leave it alone. :)

I don't notice anything else that jumps out at me.

I have the same issue with my truck. OL is dialed in at lambda and then when it goes into closed loop, it sits right at .97 lambda. Mine doesn't go crazy rich like yours does but its still kind of frustrating.

Closed loop is disabled in your tune that you posted. The enable ect is at 250*. Are you commanding CL in the scanner? Also try and change your switchpoints to 451 across the board and see if that has any effect.

Yes in that scanner I just forced it in the scanner so I could it in one log file.

Neither DTC change or the switch-point change made any difference. I have no idea what the dealio is.

If I were dealing with this problem, I would raise the VE up and see if the fueling responds accordingly. That would prove you're MAF only. If it responds, time to focus on why it's still referencing the VE

Good suggestion. I will give it a try tomorrow.