Virtual Dyno

[bbarnhill]

you dont have to edit the log to get rid of the decel portion. The TPS trimming feature gets rid of that. Thats why TPS is a required field.

[fjames]

Originally Posted by bbarnhill you don't have to edit the log to get rid of the decel portion. The TPS trimming feature gets rid of that. Thats why TPS is a required field.

That doesn't seem to work with a multi-gear log. I assumed it would cut off the second gear but it doesn't - picks it up when you go back to full throttle. Be nice if it just picked up the first gear in a log and ignored everything after ... or even better maybe a check box for 2 gears, with rescaling the chart and whatever

I always thought this was a phone app so ignored it. Finally looked and nice job, donation on the way.

[phate]

That's my only complaint about the program. I usually do 3 4th gear runs in a single log, wipe out the irrelevant non-WOT data, and analyze from there. I have to trim even further and save each run to its own file if I want to use it in virtual dyno.

[fjames]

Originally Posted by phate That's my only complaint about the program. I usually do 3 4th gear runs in a single log, wipe out the irrelevant non-WOT data, and analyze from there. I have to trim even further and save each run to its own file if I want to use it in virtual dyno.

Of course, since it's time based, if you really wanted to use VD as a tool, you'd have to be sure use the same piece of road for logging. Even a rough surface can mess it up I think, and undulations, and uphill one time and down the next etc.

Where i live there are no flat roads really, and I don't worry about it for normal logging, just go to the same area each time. But if I want to make a dedicated VD log, I have to find an exact spot to start that gives me room for 4th gear and no undulations or changes in angle of the road.

If I find that exact spot though, it would be nice to be able to "combine" logs and go ahead and shift without having to do extra housekeeping later.

[Fobio]

I don't tune with VD...it ain't like that....you still tune with the logs.

I use VD to compare if I am making a difference over my base map. I also use the same piece of road...2 flat stretches from 1 on ramp to the next off ramp.

I use it like I would at a dyno...car rolling below 2000rpm, with no throttle (in fact, stab the brakes with right foot for good measure), then floor the accelerator til redline.

In one of my conversations with Christian@Cobb, he told me that the 335 guys use something like a 30 - 90 roll and time it to the tenth of a second to gauge if they're making more power. Using VD is similar to that except you add a lot more parameters to it to make it more scientific.

[fjames]

Exactly, for repeatability with it, you must use the exact piece of road. If you do, it's a useful comparison tool when tuning, at least it should be.

I was trying to say that when normal logging, I don't worry so much because I'm the one interpreting the numbers, not some software. But with VD doing the math, you have to give it consistent inputs.

[bbarnhill]

I dont think VD will ever take multiple pulls in the same log and decipher which is a run which just messing around, and taking gear into account isn't really feasible since all the loggers it supports do not record gear. It was a big enough hassle when I went to requiring TPS. People REALLLLLY chewed me over that one. On a normal dyno you would record a run then start a new run to make a pull. Thats how we did it on the 2 4-wheel superflows we had at Hypertech when I worked there. I tried to mimic the use of a real dyno as much as possible.

[superskaterxes]

brad i sent you a PM. for some reason i am missing the columnnames.xml file.


anyone willing to send me their file?

[superskaterxes]

EDIT: NM im behind a proxy at work but as soon as i disabled it i was able to get the cars/colums updates and everything is kosher now.

[fjames]

Originally Posted by bbarnhill I don't think VD will ever take multiple pulls in the same log and decipher which is a run which just messing around, and taking gear into account isn't really feasible since all the loggers it supports do not record gear. It was a big enough hassle when I went to requiring TPS. People REALLLLLY chewed me over that one. On a normal dyno you would record a run then start a new run to make a pull. Thats how we did it on the 2 4-wheel superflows we had at Hypertech when I worked there. I tried to mimic the use of a real dyno as much as possible.

As far as what I wrote earlier I think you're misinterpreting it. My basic point was that if you can trim the "before" on throttle position, maybe you could trim the "after" as well. That way, those of us that routinely do multiple gear logs could just drop them in, instead of having to edit them as we do now.

I.E. it would just grab the first set of full throttle rows and ignore everything else.

[86AmishMs3]

Or you can manipulate the data yourself. Transfer to excel, make pretty, copy and paste to a text document and roll.

Originally Posted by bbarnhill I dont think VD will ever take multiple pulls in the same log and decipher which is a run which just messing around, and taking gear into account isn't really feasible since all the loggers it supports do not record gear. It was a big enough hassle when I went to requiring TPS. People REALLLLLY chewed me over that one. On a normal dyno you would record a run then start a new run to make a pull. Thats how we did it on the 2 4-wheel superflows we had at Hypertech when I worked there. I tried to mimic the use of a real dyno as much as possible.

You could do it by gear. It would be should extremely feasable if the user wanted to actually make their data pretty for the program. Unfortunately everyone wants your program to do this for them.

Drop a 100 in all tps entries that they want recorded. Then the user can create a column with the number gear 1,2,3,4,5,6 and then your program uses if scenarios and caluclated by what number it finds.

[RichieRichness]

Originally Posted by superskaterxes brad i sent you a PM. for some reason i am missing the columnnames.xml file. anyone willing to send me their file?

I too am missing the columnnames.xml. I ran the install and started the application but the file didn't generate. Why would a proxy setting have anything to do with an application that doesn't require internet connection?


Is there a template/update that It pulls from a server?

[superskaterxes]

Originally Posted by RichieRichness I too am missing the columnnames.xml. I ran the install and started the application but the file didn't generate. Why would a proxy setting have anything to do with an application that doesn't require internet connection?

does require an internet connection AFAIK.

thats how it gets its updates i think

[Fobio]

for you guys missing files, just a note, that the files you're looking for is in a different folder than the actual install folder inside "Programs"...

that column file is actually in the "Program Data" fodler in C:, then under "Virtual Dyno".

[RichieRichness]

Originally Posted by Fobio for you guys missing files, just a note, that the files you're looking for is in a different folder than the actual install folder inside "Programs"... that column file is actually in the "Program Data" fodler in C:, then under "Virtual Dyno".

nope

[superskaterxes]

Originally Posted by RichieRichness nope

do you have an internet connection when you first open the program thats not blocked by anything?

[RichieRichness]

Originally Posted by superskaterxes do you have an internet connection when you first open the program thats not blocked by anything?

Not at the moment but i'll try when I get home...and im sure it will work. I'm just saying...why the fuck did this file not already come installed when you run the .exe? lolz

[bbarnhill]

It comes after the install with the first update. It requires an internet connection on install. It is required on the first startup to get the column definitions, and car definitions. It cuts out a HUGE maintenence nightmare of updating the installer with each car definition thats added. I have the process automated to build the car definitions into a zip file which is downloaded from the server on startup. Its quick, and works on 99% of all machines.

Also I am fairly certain it uses port 80 right now which is the normal HTTP port to contact the server for updates. I will force this in the next release so that everyone knows what port its going to communicate on.

[bbarnhill]

Dont get me wrong ... you dont have to have an internet connection after the first startup as it tries to check for any updates and sees that there is no connection and it just goes on. The first load has to do it just because all the files are in the installer (for my sanity).

[jman46]

Pretty cool program!

[WorstEpEver]

Originally Posted by jman46 Pretty cool program!

Holy hell. Those numbers are high. My best has been 316hp/349tq

Lol whats going on with your boost line? Looks like it is trying to double back

[Burn69]

Looks like a nice program, have we been able to verify repeatability of accuracy yet?

[WorstEpEver]

Originally Posted by Burn69 Looks like a nice program, have we been able to verify repeatability of accuracy yet?

I've been using the program for about 2 months now. In that time, I've gotten DP and TMIC. Also switched over from OTS stage 2+ map to the boost tuning beta map.

In my experience, the program seems pretty consistent.

I started with around ~255/280 average before w/o the DP/TMIC, on the load tune.

Now, I'm seeing ~300/325 average with the DP/TMIC on boost tune.

[AZSPEED3]

Yeah same here, good results. Have done many dyno pulls with the virtual dyno and get very similar results.

[jman46]

Originally Posted by WorstEpEver Holy hell. Those numbers are high. My best has been 316hp/349tq Lol whats going on with your boost line? Looks like it is trying to double back

That's because Dusty is tuning my car . That is my "all time" high so far without my DP, my average numbers though are 312/331.

[bbarnhill]

Guys this isnt the first forum its been released on Its been tested in the Evo and Subaru, and GM worlds. Everyone is skeptical till they get it compared to their dyno ... then they are sold on it. Ive got some runs somewhere of a car in kansas that dynoed 701, 702, 703 back to back and then ran a pull on the street and VD showed 700hp. Ive seen them compare 300hp cars all the way to 800hp cars on this thing. All with the same results.

It DOES require a good log though. If you go get a log on a bump road, with wheel spin or a slipping clutch ... dont expect a miracle out of VD it wont fix that run. Itll look like crap

[Realgib3]

Yeah I took a log grom from Pearl_Ms3's dyno thread and the vd was within like 3whp and 5wtq of his dyno...

[bbarnhill]

Thanks Realgib3 ... Ive got this thing on SEVERAL forums and every forum goes through ... "is it accurate" phase ... they all launch a huge test thread on it ... they all come to the same conclusion.

[Realgib3]

Originally Posted by bbarnhill Thanks Realgib3 ... Ive got this thing on SEVERAL forums and every forum goes through ... "is it accurate" phase ... they all launch a huge test thread on it ... they all come to the same conclusion.

Yeah I dont doubt it. I'm thoroughly impressed so far

[daafisch]

The most important thing when using a tool like this is that its consistent, not that its 100% accurate (though its pretty close for me). I've been really happy with the program.

[bbarnhill]

Its as consistent as the logs are. Some people dont know how to log properly. By that I mean picking the road to log on, they think I can compensate for torque converters, and slipping clutches. Im just not a miracle worker.

[silvapain]

Originally Posted by WorstEpEver Holy hell. Those numbers are high. My best has been 316hp/349tq Lol whats going on with your boost line? Looks like it is trying to double back

My guess is it's from FFS while logging. If the VD program is picking up the actual pedal position, it will analyze all the data through the shift.

Here's a log of mine from a couple weeks ago. Looks great.

Edit: this is with the stock CDFP and TMIC.

[WorstEpEver]

WOAH

[silvapain]

Originally Posted by WorstEpEver WOAH

Why did you use smoothing 1? Just curious; all the dynos I've ever run on use smoothing 3 so that's what I used.


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- Tapadatass

[superskaterxes]

somethings def wrong with your load curve worstepever

[daafisch]

I've had my curves come out like this when I've hit a bump during the log.

[jman46]

Agreed, I loaded up a log I did on a shit back road that wasn't the smoothest and it said I had like 420hp and like 485tq......I only wish!

[WorstEpEver]

It was a flat road.

I know it's an anomaly because no way I'm making that power.

[bbarnhill]

yeah thats definately a bump in the road or something like that ...

[BlueDmnSpeed]

I think this thing is a lot more accurate than the PTuning dyno.
VD sheet

Ptuning Dyno dynamics sheet