-
3 Attachment(s)
RTACS and MAF tuning?
Hi All,
As the MAF table is tuned via 'paste/multiply' is it then possible to tune it using RTACS? Same way as it is done with the Auto VE tuning?
What filters should I use and what cell count is reasonable?
Thanks
Howard
Here's a tune I ran this morning and a resultant tune using the paste/multiply method (not RTACS) after applying a log.
-
you would have to disable LTFT and STFTs for it to work... you must have a wideband... use the Calc.Ben PIDs and you should be able to do it.
-
Thanks....I'll give it a try.
Howard
-
Would be most nearly identicle to the concepts applied to VE tuning. The big difference is you are tuning the MAF table instead of the VE table.
I don't have a MAF to test with, but I would imaging the same RTACS filters used for VE would apply for the MAF as well.
Because the MAF table offers a higher resolution than the VE table, you may want to make your fine and course adjustments a bit more subtle to avoid skewing the MAF table with transients.
-
3 Attachment(s)
Here's the log, before and after tunes from this morning.
-
2 Attachment(s)
OK...in trying to tune the MAF using RTACS...it seems some area's just will not pull into line.
I'm in the 14.7 (stoich) area's of my commanded AFR and I'm seeing 1 AFR rich at alot of points.
Question:
If the IFR table has been altered to richen up the mixture globally, will this cause the situation I describe?
I'm goinmg back to the settings from my OLSD Auto VE tuning and will give it another shot.
-
OK...is the fact that I'm seeing LTFT's of -1.6 what's skewing my MAF tuning (seems to be staying rich)?
http://img.photobucket.com/albums/v3...ck/datatab.jpg
Thanks
-
2 Attachment(s)
This morning I reset the trims and went again.
Better results.
-
You should have fuel trimming disabled while you tune your airflow tables.
-
Thanks TAQ yes I have got it disabled...however I hadn't reset the trims and so iut seemed they were still affecting it as they were sitting on -1.6
After zeroing them this morning...ben's seemed to fall into place alot better.