MAF Calibration (No Spreadsheets!)

[Black02SS]

It was suggested on here but I had to try it for myself. I am not to up on worksheets anymore and wanted something that was pretty easy to use. I used a custom MAP/Histogram that is based on MAF Frequency and AFR(posted in the other thread. The tables are setup so the difference from commanded and actual is displayed in a percentage just the same as LTFT/Wideband. I plotted the VE table just the same as I would if I was tuning for VE, but instead used the % error from the MAF table and after two passes was done. The ability to make our own custom MAP's is great and no more excel!!! Not to mention the guy is tickled pink now with his car.

[405HP_Z06]

It was suggested on here but I had to try it for myself. I am not to up on worksheets anymore and wanted something that was pretty easy to use. I used a custom MAP/Histogram that is based on MAF Frequency and AFR(posted in the other thread. The tables are setup so the difference from commanded and actual is displayed in a percentage just the same as LTFT/Wideband. I plotted the VE table just the same as I would if I was tuning for VE, but instead used the % error from the MAF table and after two passes was done. The ability to make our own custom MAP's is great and no more excel!!! Not to mention the guy is tickled pink now with his car.

That is too awesome! I need some cash to buy EFILive! :P

[Black02SS]

Once you switch, you will have wished you would have done it sooner. I know I was.

[bink]

It was suggested on here but I had to try it for myself. I am not to up on worksheets anymore and wanted something that was pretty easy to use. I used a custom MAP/Histogram that is based on MAF Frequency and AFR(posted in the other thread. The tables are setup so the difference from commanded and actual is displayed in a percentage just the same as LTFT/Wideband. I plotted the VE table just the same as I would if I was tuning for VE, but instead used the % error from the MAF table and after two passes was done. The ability to make our own custom MAP's is great and no more excel!!! Not to mention the guy is tickled pink now with his car.

Very Cool! 8) :lol:

Did you create a PID for % error - I can't find one??

Can you post the actual steps you used to create the map in EFILive - uhh...a method for the 'tards, like me?
( yes, I know that's not pol correct :P )

[Nox]

i would like to see this as well.

[Black02SS]

Here is the MAF % Error MAP that I used. This is for my LM1 using the Tech Edge BEN. Again, this works awsome on my car. Just copy and paste with a factor back to the B5001 Table. You guys need anything else, let me know.

[SinisterSS]

9375 Hz MAF map for PLX Wideband O2.

8)

[SinisterSS]

If your MAF table goes to 12000 like mine, use this map -

12000 Hz MAF map for PLX Wideband O2.

8)

[SinisterSS]

By the way kids, this calibration method works extremely well.

Step by step:

0. Assuming a calibrated VE using speed density mode and "AutoVE"...
1. Put the tune in closed loop and all normal PE, etc.
2. Disable LTFT {B3801} and STFT idle trims {B4108}.
3. Log a bunch of data - normal driving, wide open (to hit the high Hz, do some bonzai 4th gear 100+ mph runs :wink.
4. Save the log file.
5. Filter the throttle transients out using the BEN filter.
6. Copy and paste the MAF map as a factor into your MAF table in the tune.
7. Repeat steps 3 through 6 and you'll have the MAF dialed.

My MAF is dialed in to within 1% from 2375 Hz to 11k+.

Thanks black02ss; nice work! 8)

[Black02SS]

Nice write up. I edited my attachment to represent 12000hz.