Versatuner MAF Calibration Problem (Logs added)

Discussion of tuning specific to MAZDASPEED3/MAZDASPEED Axela/Mazda 3 MPS vehicles
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lanky_mps
Posts: 16
Joined: February 13th, 2012, 1:15 pm

Versatuner MAF Calibration Problem (Logs added)

Post by lanky_mps »

Hi guys hopefully you lot can help. So I've installed my Versatune today, uploaded the high load map, covered about 30/40 miles since like the guide says but now I've come to calibrate the MAF using the Versatune Excel Spreadsheet but my car won't read below 1.14 volts on the Mass Air Flow Voltage so how am I ment to get the readings for all the voltages below 1.14 volts?

Any help is very much appreciated and if anybody is free some night this week an lives near either Stockport or Congleton and knows how to calibrate it completely then I would appreciate some help.
Last edited by lanky_mps on February 14th, 2012, 7:10 am, edited 1 time in total.
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Steve @ VersaTune
Lead tuner
Posts: 1157
Joined: March 29th, 2010, 12:58 pm

Re: Versatuner MAF Calibration Problem

Post by Steve @ VersaTune »

No worries. The engine is never under any real load at that MAF voltage anyway. Just calibrate the operating range that you can log. You may want to manually extrapolate/smooth below 1.14v if you see a big jump from the first logged data point and the points below.
lanky_mps
Posts: 16
Joined: February 13th, 2012, 1:15 pm

Re: Versatuner MAF Calibration Problem

Post by lanky_mps »

Ive attached the logs I managed to get from tonight. Hopefully this is good enough for somebody to possibly be able to fill out the Excel spreadsheet for me so I can add it to my Map.

Here are some logs I took tonight. $ of which are 3rd gear gradually building up the revs to the limiter and the other 4 are 3rd gear WOT runs.
Attachments
Mass airflow sensor calibration WOT 3rd Gear 1.3.zip
3rd Gear WOT Runs
(3.84 KiB) Downloaded 394 times
Mass airflow sensor calibration WOT 3rd Gear 1.2.zip
3rd Gear WOT Runs
(3.99 KiB) Downloaded 389 times
Mass airflow sensor calibration WOT 3rd Gear 1.1.zip
3rd Gear WOT Runs
(4.12 KiB) Downloaded 407 times
Mass airflow sensor calibration WOT 3rd Gear 1.zip
3rd Gear WOT Runs
(3.7 KiB) Downloaded 370 times
Mass airflow sensor calibration 1.4.zip
3rd Gear Gradual Acceleration
(22.22 KiB) Downloaded 419 times
Mass airflow sensor calibration 1.3.zip
3rd Gear Gradual Acceleration
(19.96 KiB) Downloaded 393 times
Mass airflow sensor calibration 1.2.zip
3rd Gear Gradual Acceleration
(20.9 KiB) Downloaded 393 times
Mass airflow sensor calibration 1.1.zip
3rd Gear Gradual Acceleration
(26.58 KiB) Downloaded 393 times
lanky_mps
Posts: 16
Joined: February 13th, 2012, 1:15 pm

Re: Versatuner MAF Calibration Problem

Post by lanky_mps »

Here are some other 4th gear WOT runs that I managed to get tonight.

Hopefully these logs will be helpful.
Attachments
Mass airflow sensor calibration WOT 4th Gear 1.3.zip
(5.94 KiB) Downloaded 399 times
Mass airflow sensor calibration WOT 4th Gear 1.2.zip
(5.91 KiB) Downloaded 377 times
Mass airflow sensor calibration WOT 4th Gear 1.1.zip
(6.03 KiB) Downloaded 391 times
Mass airflow sensor calibration WOT 4th Gear 1.zip
(6.29 KiB) Downloaded 368 times
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