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?

[Pierrel]

I use cylinder airmass in the instances where the formula maxes out. Surprisingly only really happens in boost even with the 427's I've done.

I'm about to look at a boosted ls7 and figure im going to be in trouble with the max cap on the Dyn Air formula. It's got 2 bar OS, thinking VE should be done with just fuel trims.
Are you just switching Dyn Air to Cyl airmass, and are you still using Cringers tools or going old-school?

Haven't read the "what is dynamic airflow" thread completely, dunno if there's a viable solution in there...

[etxridn]

Read alot of threads and I am not sure how to setup the graphs needed to use the VVE tool for a gen5 e92 ecm on a LT4 engine?
Can anyone share?

[etxridn]

what is wrong with the graph, for a gen5 e92 ecm using latest vcm suite
getting no data when using pressure ratio and rpm for vve and eq ratio?
baropress.png
graph-baro-press.png
eq ratio.png
press ratio.png

[Cringer]

what is wrong with the graph, for a gen5 e92 ecm using latest vcm suite
getting no data when using pressure ratio and rpm for vve and eq ratio?
baropress.png
graph-baro-press.png
eq ratio.png
press ratio.png

Your Editor PR units are .450 or ,450
Your Scanner is 450.
So you are off by a factor of 1000.

Change the scanner to match the editor.

Your PR should start at like .100 though.

[etxridn]

I tested before to manually change all to 0,450 but it just reverts back to 450.
Similar issue with rpm, i have to manually remove the space, like from 4 500 to 4500.

[etxridn]

Your Editor PR units are .450 or ,450
Your Scanner is 450.
So you are off by a factor of 1000.

Change the scanner to match the editor.

Your PR should start at like .100 though.

Hi, Do you know how to fix this issue, when I copy the zones it will use , and then when copying histogram it has to be . in the graphs but then your tool complains that it is . and not ,

Screenshot 2024-05-25 203048.png


Tested with . and can see data without filter but with this filter there is no data.

[2517.161.avg(1500)]=0 and [2517.161.avg(-200)]=0 and (abs([50090.156.slope(1500)])+abs([50090.156.slope(-500)]))<2 and ([6310]=9 OR [6310]=14 OR [6310]=15)=0

I can see data in fuel trim cell (6310) but never any of the numbers in the filter?