VersaTune User Forum

Hey all,

I am looking for some guidance on how to calibrate my MAF on my S1 4port turbo

I have been trying multiple things to work it out but just cant seem to get my head around how to use the log to get the calibration required, I have megalog HD that I can use but just unsure where to go

Attached is 2 logs from today that are not super long but kept in closed loop as much as possible, any suggestions or formular to use MAF value, LTFT/STFT and rpm to work out what needs to be tweaked?

I'd say your current MAF calibration is not very much off, it's within reasonable limits. I'd leave it as is for now and eventually see what deviations you have once you go higher in the MAF voltage range once you will progress with your tuning.

Curious, is your maf in a tube similar to stock diameter? If not apparently you can do a formula working out the % difference in volume to apply to the maf voltages as a good starting point. But if you got it near spot on, perhaps this is moot.