OVT vF Map Edit - Air Load Control (ALC)

I tossed up the Stock and unedited 04B14 tables at the bottom of the 1st Post. For me on 04B14 SFOB Prem and reviewing the data, there was no change between OVT and Stock. If your DT tune is similar, then I would say to give it a shot?


If you look at the Expected Air Control maps (second group), you will see where I got too aggressive in the bottom end. The easiest place for me to experience it was tip in at around 2k in all gears. So, tracing the rows at that RPM revealed my mistake. Easy fix though.

 

Negative. SFOB Reg w/ 91oct.

There is random jerkiness though. Someone recently described it as "stages", which I think is appropriate. There's sometimes that "bumpy road" feeling a bit lower down in 2nd, and other times in 1st through 3rd it's like it surges in stages. You put your foot down and it'll give you most of what you want and at specific intervals it'll give you more and more, "surging" forward. Like a less pronounced vtec hitting multiple times.

 

i can compare my open vF file to what you have posted on TW obviously which is helpful here, but you can't yet compare files within vF , right?

 

thanks. and yes there's that 'stages' thing again regarding acceleration. like you, my stuff runs predictably and tight about, let's say 80% or a bit more of the time. but when it's off it's just like you and that stages guy described.

 

Not that I am aware of. You can open multiple tune files though. The one tricky part is telling the maps appart. I had to pay attention to the title bar in each window.

A spreadsheet can compare two groups of data though. It has been a long time and cannot remember what function that was in Excel.

The big deal here is that as long as you are working off of a copied file, there is no danger for overwriting old, good stuff. Also, if you make a mistake within a map, there is no Undo / Redo function yet, but you can just close it, do not save it, and reopen it.

 

You can open both files (up to 3 actually). I do it quite a bit when making edits

 

Did you find a Compare function or were you visually comparing?

 

first thing i did was make a copy to play with. i'm not doing more than opening the original to export it. i'm not really worried about being safe with this. more than anything it will be about doing the trial and error assessments with me currently bedridden, and as soon as i'm out of bed i'll be slammed busy and way behind the ball. such is life.

 

Certainly, the Export function will make a new file. My thing is that the Save button is so easy to hit and just a common thing for me to do often. I am always working from a backed up copy, but still accidental overwriting is annoying to me.


Get well, but not too soon. I have been itching for a wellness day, but it would be a guilty one considering.

 

thanks very much.

well the main issue i'm having right now, and you guys are gonna laugh... i cannot do this shit on my 13" laptop! but i have a dongle with HDMI out...

 

@tonered Can you post up your most recent B14 file? I did all 4 air load tables and got them smoothed out. I can for sure feel a difference already.
Next, i want to look at the 3d throttle mapping and the accelerator limiting down low

 

Sorry, but I am not 100% comfortable posting entire edited files, esp without a full explanation of what feeds these maps and what they affect. Also, my file has all limits at 100% including 4Lo and Reverse. No matter what folks feel about that (comments or flashing), I can't feel good giving that to others, esp as I have not tested those to the fullest extent or at all yet.

That said, my latest (V2) edits are in the 1st Post. If you really what those exact values, I can copy those maps to a spreadsheet via a PM.

 

Understood!
I'm more looking for any throttle tweaks. Much like @subrat , i'm feeling that jerky motion when stomping on the gas.
After the airflow mods, i totally feel a difference in torque, but the acceleration is still jerky and not smooth. I assume this would be fixed by smoothing out the throttle tables?

 

The Throttle changes were very easy to do. A couple things here:

I thought my jerky throttle issue was the Throttle map edit, but it wasn't. It was just too much smoothing of these maps.

Nothing dangerous on the driveability side, just annoying.​

From what I am seeing on the past few drives is that the acceleration smoothness, esp in 1st Gear, is spot on. Prior to with a few k on the flash, holding a steady pedal trying to accelerate just slightly faster than my normal, I would get an extra shot at about 1,500 or so. It would seem to others as if I was trying to race them?

Right now, it seems those V2 tables, plus turning the 1st Gear limits to 100% may have solved it. It will be some time until I can confirm.


On the Linear Throttle map edit, doing that change only seemed to reduced pedal throw. Sort of a Pedal Commander type change? Once we know what those values actually relate to, then I may try editing those again. Right now, I am Stock / 04B14 unedited there and back to being extremely happy.

I would really like to see what OVT thinks a linear throttle map looks like.

 

Just my eyeballs.

there is a button though that will highlight the values that have been changed since you started modifying the file in that session. Still no undo button though..

 

Interesting. I only saw that when touching 1D maps, like the 1st Gear limits.


I was not paying that much attention though. Just concentrating on the Shingling / CTRL + I, over and over.

 

i didn't mention specifically but to be clear..
if i get a jerky acceleration it always seems to show somewhere in 25-50% of pedal throw. i don't recall that jerky stuff at full throttle but i may have missed it.

 

Definitely a smooth rip at WOT. This is only a part throttle thing for me. My 'normal' driving is pulling away from a stop faster than most folks around here when driving their 'normal,' which is a bit faster than granny slow.

 

same. and if I'm living the dream it will accelerate strong like that at about 40% throw only. and it is like this. except when it isn't.

 

Ok here's where i am...
I took the B14 SFOB file and did some smoothing on the torque limits, per this post. Note: I only did the Ctrl+I smoothing TWICE per section i highlighted. I also moved the ACIS RPM high to 3400 per another post i read earlier. Lastly, i moved all the throttle limits to 100 across the board.
When i floor it, it's much smoother now.
When not flooring it, it's still a little jerky, but better? maybe?