What is dynamic airflow

[SiriusC1024]

It will if you can log Volumetric Efficiency Airflow. If not then substitute the 50030.91 MAP sensor formula above for the 2311.71 terms and the 50091.156 TPS term.

ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

[LS ROB]

It will if you can log Volumetric Efficiency Airflow. If not then substitute the 50030.91 MAP sensor formula above for the 2311.71 terms and the 50091.156 TPS term.

ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

I am able to log Volumetric Efficiency Airflow; thank you.

[schiavonske1013]

I've know that on at least one Gen 3 I've tried there is no Volumetric Efficiency Airflow channel. If you can't use that then the MAP sensor alone will be a reasonable approximation. TPS filter not needed.

ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

Attachment 137170

Appreciate it, mine doesn?t have the VVE airflow PID

[GHuggins]

What did the filters wind up being with the fuel modes added to them? Forgot what thread that was in to go back and get them.

[SiriusC1024]

https://forum.hptuners.com/showthrea...F-Tuning/page2

___PE existing filter___ AND [6310]=9

___CL existing filter___ AND ([6310]=9 OR [6310]=14 OR [6310]=15)=0

Somewhere in the Gen4 section; I can't remember who broke the FTC down for us.

([6310]=9 OR [6310]=14 OR [6310]=15)=0
If fuel trim cell is: PE or OL Idle or DFCO then do not allow data to pass through

[GHuggins]

Just saw these. Thank You Sirius. Oh and change the wot pedal setting to 75 - should cover everything and works pretty good.

Also for anyone out there. If you haven't seen it yet or maybe it's not public yet - don't know for sure - BUT if it is - you need to try out Cringer's new VVE tool. That thing is FANTASTIC....

[SiriusC1024]

Right on. That would basically mean WOT for any of the TPS's. Thing is you'd still have to assign the correct PID wouldn't you? Or will logging the general parameter work for all cases?

And yeah Cringer does some impressive work. I like his intentions, too.

[LS ROB]

Just saw these. Thank You Sirius. Oh and change the wot pedal setting to 75 - should cover everything and works pretty good.

Also for anyone out there. If you haven't seen it yet or maybe it's not public yet - don't know for sure - BUT if it is - you need to try out Cringer's new VVE tool. That thing is FANTASTIC....

I'm going to have a go at that whenever i get some free time. Bout to finish up this accelerated class in a couple of weeks and should be able to get back into it. I rotated the MAF tube to try and not have the MAF directly impacted by the radiator heat and boy did it make a big difference lol Everything went lean so this will give me the opportunity to play with it.

[GHuggins]

Well, I use a particular set of channels so can't comment on that part - I'll attach to make things easy for everyone. Should work on most nearly all gen 4's then they can be customized for additional pids for each person.

To use - download - right click - show in folder - right click - copy - open scanner - go to open recent channel configs - open recent config - paste here and then click on.

I should have probably clarified that more - Cringer has a NEW VVE tool. It auto applies corrections and allows you to interpolate or average the histo data for the given zones. Really looking forward to version 2.0's future release now that I've used 1.5 https://www.youtube.com/watch?v=nnA1rA5QQ7A&t=2s

[SiriusC1024]

Thanks for the channels. There have been a few questions on how to use this filter, so that helps a lot. Here's some clarification on filter usage:

MAF and MAP simultaneous stability:

CL:

UMAF & UMAP
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

OL:

(UMAF & UMAP) OR (TPS>75% & MAP>80kPa & MAP_SS)
(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)

CL if Volumetric Efficiency Airflow can't be logged:

UMAF & MAP_SS
ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

OL if Volumetric Efficiency Airflow can't be logged:

(UMAF & MAP_SS) OR (TPS>75% & MAP>80kPa & MAP_SS)
(ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.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)

For SD remove the UMAF component:

CL SD:

UMAP
ABS([2311.71]-[2311.71.shift(-10)]) < ([2311.71]/[2311.71.shift(-10)])*0.1

OL SD:

UMAP OR (TPS>75% & MAP>80kPa & MAP_SS)
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)

CL SD and OL SD if Volumetric Efficiency Airflow can't be logged:

MAP_SS
ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

UMAF and UMAP are the stability terms per the patent.

MAP_SS is the same steady state formula but applied to the MAP sensor itself. Filtering only MAP_SS is applicable to all airflow tuning schemes and works for every case; however, it's also not quite as accurate. Still, it's more accurate than filtering for TPS stability.

It's on the user to make sure PE/Boost Enrichment enables and filter conditions match. Generic TPS PID [50090.156] is used and set to 75% to enable WOT capture for all types of TPS. For more precision substitute the exact TPS PID that scales 0-100% then set accordingly.

Feel free to add to the filter as needed, such as substituting a fuel trim cell for WOT TPS and MAP enables. Boolean logic can be blocked out with parenthesis.

This airflow filtering method applies to any form of airflow tuning Gen 3 - Gen 5. In fact, it can even be reconfigured for the traditional method of tuning MAF and VE/VVE individually by selecting the applicable terms.

[ecir55]

this thread starting to come together thanks for sharing

[GHuggins]

Thanks for the channels. There have been a few questions on how to use this filter, so that helps a lot.

Here's some clarification:

CL Gen 3 where Volumetric Efficiency Airflow can't be logged:

UMAF & MAP
ABS([50040.71]-[50040.71.shift(-10)]) < ([50040.71]/[50040.71.shift(-10)])*0.1 & ABS([50030.91]-[50030.91.shift(-10)]) < ([50030.91]/[50030.91.shift(-10)])*0.1

CL for all generations where Volumetric Efficiency Airflow can be logged:

UMAF & UMAP
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

OL for all generations using wideband 1 bar, 2 bar, 3 bar:

(UMAF & UMAP) OR (TPS>75% & MAP>80kPa & MAP)
(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)

UMAF and UMAP are the stability terms per the patent.
MAP is the same stability formula but applied to the MAP sensor itself.

It's on the user to make sure PE/Boost Enrichment enables and filter conditions match.

Feel free to add to the filter as needed, such as the fuel trims. Boolean logic can be blocked off with parenthesis.

Don't forget to put the fuel modes into the equations because those did make a difference for getting better data once combined with the airflow filter.

[SiriusC1024]

I changed stuff up a bit on that post.

I tried the fuel trims but got odd results. You probably have a better grasp on how to use them. They're intended to substitute the TPS PE term right? Using the fuel trim flags I wasn't getting all the data during WOT like I should have.

What'd you end up with?

[GHuggins]

I changed the tps setting to 75 and then just added the fuel modes to the end of the filter. Seemed to work good, but I only had to do one tonight and it was two very well logged runs using good pedal control that I averaged together, so it didn't have any wot stomps in them. I'll see how the wot stomps goes on the next one with the formulas.