OFT logs and VirtualDyno - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wparsons · 03-04-2014, 09:29 AM

Quote:

Originally Posted by Victor Draken

GREAT STUFF!

I still need to understand how to fix if slightly uphill and how to understand if the pull is done properly or not, will make few test soon.

For ppl like me where for ONE launch on the dyno they want around 100euro this program is a life saver

There's a few good threads on other sites with instructions on how to get GOOD logs for accurate Virtual Dyno charts. The long and short of it is that you NEED a good flat road as the starting point. The consensus on how to tell is to take a log in each direction and see how close they are.

Victor Draken · 03-04-2014, 09:52 AM

Quote:

Originally Posted by wparsons

Open the CSV in a proper text editor, not in excel/open office/etc.

like what?

I have used a text editor, I can't make it work to read past 5k rpm. It's getting annoying.

File Attached.
Have a look please.
@wparsons

wparsons · 03-04-2014, 10:10 AM

Textpad, notepad, notepad++, etc.

Victor Draken · 03-04-2014, 10:53 AM

makes not much sense

jamesm · 03-04-2014, 10:56 AM

i've run virtual dyno against a log i made while on an actual dyno, and the results were within 1hp. i'd say it's pretty damn accurate when done properly.

wparsons · 03-04-2014, 11:32 AM

Quote:

Originally Posted by jamesm

i've run virtual dyno against a log i made while on an actual dyno, and the results were within 1hp. i'd say it's pretty damn accurate when done properly.

If the setup is done right, and the road is dead flat then you get REALLY good results.

If you're using it just for tuning purposes the road doesn't matter as much as long as you always do your pulls in the same direction. Your chart will be skewed from someone else, but it'll be accurate to past pulls/charts and it'll show you if you gained or lost power with whatever you changed.
@Victor Draken, I don't have virtual dyno here at work (or my working logs). I'll have a look tomorrow when I get home, not going straight home tonight.

jamesm · 03-04-2014, 12:05 PM

i'm in florida, so it's pretty much all flat. i just put it in 3rd, stab the throttle wide open at 2.5k and run it out to redline. gives me nice repeatable results every time. pretty simple and effective really. great way to tell if what you're doing is helping or not, though i agree they're pretty much useless for comparison (then again, so it every dyno that isn't a dynojet).

bfrank1972 · 03-04-2014, 12:27 PM

Quote:

Originally Posted by wparsons

If the setup is done right, and the road is dead flat then you get REALLY good results.

If you're using it just for tuning purposes the road doesn't matter as much as long as you always do your pulls in the same direction. Your chart will be skewed from someone else, but it'll be accurate to past pulls/charts and it'll show you if you gained or lost power with whatever you changed.
@Victor Draken, I don't have virtual dyno here at work (or my working logs). I'll have a look tomorrow when I get home, not going straight home tonight.

If you're pulling in higher gears wind resistance will probably come into play, no?

Victor Draken · 03-04-2014, 01:02 PM

Quote:

Originally Posted by wparsons

If the setup is done right, and the road is dead flat then you get REALLY good results.

If you're using it just for tuning purposes the road doesn't matter as much as long as you always do your pulls in the same direction. Your chart will be skewed from someone else, but it'll be accurate to past pulls/charts and it'll show you if you gained or lost power with whatever you changed.
@Victor Draken, I don't have virtual dyno here at work (or my working logs). I'll have a look tomorrow when I get home, not going straight home tonight.

thanks man, appreciated.

Will wait for your response.

jeebus · 03-04-2014, 07:46 PM

Quote:

Originally Posted by Victor Draken

Is not properly working for me, Can't display past 5krpm
My dyno stop at 5,2k rpm. any suggestion?
Anyone can upload his csv file that works so I can compare with mine?
I think openoffice is fucking up the size of the column or somethingelse.

Any suggestion?

I was having the same issue. Not sure why it fixed it, but I deleted a few rows down low (every other row), probably deleted like 10 rows only then reloaded and it worked fine after that.

Captain Insano · 03-04-2014, 07:56 PM

Cool functionality for the OFT logs!

jeebus · 03-04-2014, 07:57 PM

here's mine. 3rd gear e85 vs 91 octane.

Victor Draken · 03-04-2014, 09:14 PM

Quote:

Originally Posted by jeebus

here's mine. 3rd gear e85 vs 91 octane.

can you post the log that work with it, so I can see it and compare with mine?

DriftHappens · 03-05-2014, 01:15 AM

For anyone having the RPM stopping short issue, I found a fix. Change all of your throttle position values to 100. VD has an issue where it assumes non-WOT below a certain value (not sure what the value is or how to change that yet, im working on it). All of my TP values were hovering just above 90% above 4k or 5k rpm and it wasn't plotting those.

03-04-2014, 10:53 AM	#18
Victor Draken Senior Member Join Date: Nov 2013 Drives: Toyota Gt86 Location: Italy Posts: 370 Thanks: 119 Thanked 61 Times in 40 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	makes not much sense __________________

03-04-2014, 07:57 PM	#26
jeebus Senior Member Join Date: Jul 2012 Drives: 2015 Mustang GT (on order) Location: San Diego Posts: 904 Thanks: 114 Thanked 471 Times in 208 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	here's mine. 3rd gear e85 vs 91 octane. Attached Images __________________

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03-04-2014, 10:56 AM	#19
jamesm Banned Join Date: Mar 2013 Drives: 2013 FR-S Location: Orlando, FL Posts: 2,929 Thanks: 1,166 Thanked 2,293 Times in 1,180 Posts Mentioned: 313 Post(s) Tagged: 4 Thread(s)	i've run virtual dyno against a log i made while on an actual dyno, and the results were within 1hp. i'd say it's pretty damn accurate when done properly.

03-04-2014, 12:05 PM	#21
jamesm Banned Join Date: Mar 2013 Drives: 2013 FR-S Location: Orlando, FL Posts: 2,929 Thanks: 1,166 Thanked 2,293 Times in 1,180 Posts Mentioned: 313 Post(s) Tagged: 4 Thread(s)	i'm in florida, so it's pretty much all flat. i just put it in 3rd, stab the throttle wide open at 2.5k and run it out to redline. gives me nice repeatable results every time. pretty simple and effective really. great way to tell if what you're doing is helping or not, though i agree they're pretty much useless for comparison (then again, so it every dyno that isn't a dynojet).

03-04-2014, 07:56 PM	#25
Captain Insano Senior Member Join Date: Sep 2012 Drives: 2014 Jeep Wrangler RubiconX Location: Midwest, USA Posts: 1,282 Thanks: 110 Thanked 292 Times in 224 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Cool functionality for the OFT logs!

03-05-2014, 01:15 AM	#28
DriftHappens Member Join Date: Nov 2013 Drives: '14 FRS White Location: Las Vegas Posts: 77 Thanks: 22 Thanked 44 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	For anyone having the RPM stopping short issue, I found a fix. Change all of your throttle position values to 100. VD has an issue where it assumes non-WOT below a certain value (not sure what the value is or how to change that yet, im working on it). All of my TP values were hovering just above 90% above 4k or 5k rpm and it wasn't plotting those.

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