VersaTune User Forum

What are the benefits and drawbacks of a 100% closed loop tune apart from having the LTFT's active all the time and having no transitions between the two states?

Ok, I;ve got my questions answered here: http://www.mazdaspeedforums.org/forum/f9/100-cl-129006/
Maybe someone else is interested.

I had a rich mixture (<0.75) when starting feed meth in OL.
With FTCL my Actual AFR always equal Desired AFR.
But I can not increase CL/OL Load Threshold greater than 2.0. So I have OL when load > 2.0.

Hey Yura!

Indeed, that was their point as well, to use full time CL only when messing with random mixtures of meth or ethanol.
It's probably just a matter of time until the Versatuner crew will release a version that will raise the CL-to-OL threshold from maximum 2 to, say, 4.

I believe that if you set CL OL APP Threshold 5 to 100% it will never go OL as the APP will never exceed 100%.

Indeed, but there's also a load threshold which cannot be set higher than 2 in versatuner. And whichever condition is met first will make the ECU decide to go OL.

try that APP table.

My tune already has all the values in that APP table set to 100%. However, the load threshold is set to 1 so whenever load exceeds 1 the ECU transitions to OL. I guess same thing will happen at load 2.

I saw someone else (can't remember who right now) that was CL at WOT from setting that table to 100%. Maybe they were under 2.0 load. I'll be sure to raise the load limit on the OL/CL load tables in the next release.

Hello,
I have a question about 100%cl ,if we manage to make it work then we will have only to make the cl maf cal??
So all the ol tables will be useless??

Is that correct or i`m missing something....