Calc.VET: correcting MAF and calculating VE (in single log)

[WeathermanShawn]

Len, my Idle theories are that on a MAF-Enabled vehicle, it is still primarily the MAF that affects Idle Trims such as LTFT's. You see the VE Table's influence primarily on cold-open loop start-up.

It gets tricky manipulating the MAF Frequency for Idle, because sometimes the same airflow is present at 0% TPS or low load. So just do the best you can.

The tight CALC.VET filter that has Spark in it, is to try to filter out DFCO transitions. Lately, I have just been trying to suggest Tuners disable DFCO as I have seen better results that way. You can still use the other tight parameters and just drop spark.

Thanks for all your logs. You have helped show that 100% WOT is the best way to dial in PE Mode..like you said not as easy to do if you live in an urban area...

[s10mods]

I followed the CALC.VET pdf, I set up everything and ran a log, applied filters, but when I copy the values fromt the CALC.VET map, the values are low (1.3-2.5) and my VE values are high, 70's and 80's. so when I copy and paste it makes my VE talbe all screwed up, am I pasting wrong? I did a copy with labels and a paste with labels.

[WeathermanShawn]

Sounds like your Units don't match..

NOTE: for map Data, use the CALC.VET pid units that match your B0101 table, i.e. either % or g*K/kPa.

To display units on a map: go to map properties, on each of the Data, Row, Col tabs, checkmark Show Units.

[joecar]

I followed the CALC.VET pdf, I set up everything and ran a log, applied filters, but when I copy the values fromt the CALC.VET map, the values are low (1.3-2.5) and my VE values are high, 70's and 80's. so when I copy and paste it makes my VE talbe all screwed up, am I pasting wrong? I did a copy with labels and a paste with labels.

Do what Shawn said.

Post screenshots of your VET map and your VE table.

[s10mods]

Here are the screenshots. It looks like they match. I also attached my tune and log file.

[Taz]

Looks like the VE table in your tune is in percent (%) and your CALC VET table is in gK/kPa ... like apples and oranges ... can only compare (update) them if they are in the same units.


Regards,
Taz

[s10mods]

Can I just change the units in my tune?

[s10mods]

I see where I messed up now. I wasnt looking at the Units, I was looking at kpa and thought they matched. I changed my units in the tune tool.
Thank you for your help

[joecar]

Can I just change the units in my tune?

Yes, go Edit->Properties and look at the VE units, select g*K/kPa; then restart the tunetool.

I see where I messed up now. I wasnt looking at the Units, I was looking at kpa and thought they matched. I changed my units in the tune tool.
Thank you for your help

Oh, you did it, cool

[68sstt]

Can anyone tell me if this tuning method is suitable for my application.
I have an e38 boosted and it retains the maf but pegs the maf at around 5500rpm
I am running e85 and have an analogue wideband and a pid to suit

thanks