Tuning MAF and VVE at the Same Time

[hjtrbo]

There's always room for improvement. These new version filters are pretty good, but not perfect. The constants are your 'tuning knobs' if anyone would like to dial them in further.

I need to reiterate again (in bold this time), these new filter versions severely bog down the scanner on loading large logs. E.g. if you've got a 20+MB log, you're best to go boil the jug and make a coffee.

There is nothing wrong / defective with the old version filters if the bogging down pisses you off.

They are an alternative, not a replacement to the old version filters.

Happy tuning you lot.

[hjtrbo]

GMVE method is due to (1) the defect in the HPT scanner that limits the MAF and VVE values and (2) "I've only ever tuned boosted."

Lol, I'll have to confess at some point; my tuning examples are limited to friends and family at the appropriately discounted rate of $0 per tune + a 4 slab beer tax + credits. I like beer.

[SiriusC1024]

Have these filters not been useful?
https://forum.hptuners.com/showthrea...l=1#post748278

[hjtrbo]

They are fine. Only thing I didn't like is whilst they were good at detecting stability, after a transient event the airflows would stabilise allowing data to pass through, yet the closed loop fuel correction hadn't stabilised thereby passing unstable fuel trim data into the scanner graph. Picking at straws.

[hasanyoneseenmyson]

Sorry, I do not have any experience on Gen3's and I do not know if Dynamic Air is implemented the same way as it is on Gen 4 and Gen 5. If it is not accessible in your scanner, then I think you have your answer and you are going to have to use the legacy methods for tuning.

Update for the gen3 crowd. I have been using this method with Sirius' applicable filters for MAF on my gen 3 with success. Much quicker and more accurate than older methods with definite improvements in drivability. I have not found a way forward that I trust to do speed density simultaneously, I'm just a newb with a laptop and a busy life. Regardless this seems the right method for gen3 MAF as well.

[DobermanRacing]

I've been struggling to find (maybe understand) applicable filters for Gen V. I've been using TitanTuned filters.

MAF DYNAMIC AIR OPEN LOOP 
[50070.56]>2500 AND (ABS([50040.71]-[50040.71.shift(-10)]) <([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1) OR ([50090.156] > 50 & [50030.91] > 60 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1)

MAF DYNAMIC AIR CLOSED LOOP STFT
[50070.56]<2500 AND ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1

VVE DYNAMIC AIR OPEN LOOP
[50070.56]>2500 AND (ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1) OR ([50090.156] > 75 & [50030.91] > 80 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1)

VVE DYNAMIC AIR CLOSED LOOP
[50070.56]<2500 AND ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1

I just didn't like how he filtered for Closed Loop and PE so I expanded on his filters to fit my Power Enrich Enable Pedal table.

Screenshot 2024-05-06 173855.png

MAF CL
[50091.156] > 0 AND ((([50070.56]<2048 AND [50090.156]<70]) OR ([50070.56]<2560 AND [50090.156]<65]) OR ([50070.56]<3072 AND [50090.156]<45]) OR ([50070.56]<3584 AND [50090.156]<37]) OR ([50070.56]<4096 AND [50090.156]<28]) OR ([50070.56]<4608 AND [50090.156]<25])) AND ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1)

MAF PE
[50091.156] > 0 AND ((([50070.56]>2047 AND [50090.156]>69]) OR ([50070.56]>2559 AND [50090.156]>64]) OR ([50070.56]>3071 AND [50090.156]>44]) OR ([50070.56]>3583 AND [50090.156]>36]) OR ([50070.56]>4095 AND [50090.156]>27]) OR ([50070.56]>4607 AND [50090.156]>24])) AND (ABS([50040.71]-[50040.71.shift(-10)]) <([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1) OR ([50090.156] > 50 & [50030.91] > 60 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1))

VVE CL
[50091.156] > 0 AND ((([50070.56]<2048 AND [50090.156]<70]) OR ([50070.56]<2560 AND [50090.156]<65]) OR ([50070.56]<3072 AND [50090.156]<45]) OR ([50070.56]<3584 AND [50090.156]<37]) OR ([50070.56]<4096 AND [50090.156]<28]) OR ([50070.56]<4608 AND [50090.156]<25])) AND ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1)

VVE PE Lambda
[50091.156] > 0 AND ((([50070.56]>2047 AND [50090.156]>69]) OR ([50070.56]>2559 AND [50090.156]>64]) OR ([50070.56]>3071 AND [50090.156]>44]) OR ([50070.56]>3583 AND [50090.156]>36]) OR ([50070.56]>4095 AND [50090.156]>27]) OR ([50070.56]>4607 AND [50090.156]>24])) AND (ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1) OR ([50090.156] > 25  & [50030.91] > 80 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1))

Should I remove the

OR ([50090.156] > 25  & [50030.91] > 80 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1)

from the open loop filters because my PE pedal enable section of the filter already covers it?