MegaLogViewer HD has a new feature

[whittlebeast]

My MLVHD updated and a new feature showed up. Note that this may only show up with the registered version. There now is the ability to create histograms to display almost anything like AFR or throttle position. The cool part of the MLVHD version of this is it will display any combination of 3 log fields that you want. Here is a couple of screen shots to give you guys an idea what can be done.

Here is a sample of AFR.

http://www.nbs-stl.com/RxpxTuning/MLVHD%20Histogram%20AFR.PNG

In the next screen shot I display the average Duty Cycle at every location.

http://www.nbs-stl.com/RxpxTuning/MLVHD%20Histogram%20Duty%20Cycle.PNG

The game changer is that you can set the RPM and MAP break points to any value you want. You can then paste those numbers into Excel. Way cool stuff. I will post more as I find things in the software.

This example happens to be a Motec log but it also works just fine with lots of other logs like PC5/POD-300 or Power Vision logs.

Andy

[hrdtail78]

Links go to Niehaus but says page isn't found.

You mess with EFI live ever?

[whittlebeast]

Try the links now....

Does EFI Live have data logs you can send me?

[hrdtail78]

Links work.

Your inbox is full.

[whittlebeast]

A cool thing about this software is it will regenerate almost any table from an unknown tune.  All you do is log the unknown tune and plot up anything you want.  This happens to be a turbo motor that I needed the timing map to see what the original tuner installed into the tuning software.

http://www.nbs-stl.com/mlvhd/MLVHD%20Timing%20Histogram.PNG

Have fun tuning

[whittlebeast]

Here is a cool new thing hidden under the covers.

Go to histogram, and pick rpm, map and afr. Now press <control> P and the run will play and real time.

https://m.youtube.com/watch?v=eMkTpc-6POc

Notice how fast the fuel tuning cells change. The number in each box is the average AFR the motor was getting for the run.

This log is from a racer playing cat and mouse with a couple of fellow racers.

Andy

[whittlebeast]

I just did a quick video to show how you can jump around in views as the log replays.  Keep in mind that the majority if the tuning I do is on motors I have never seen.

https://www.youtube.com/watch?v=PtP_PhvdnnY

Andy

[whittlebeast]

I did this post for a different site.  This happens to be a different motor but all the principals still apply to Harleys, or any other motor you may be tuning.  Notice how well these motors in the histogram table......  And to think that is a typical Sunday ride for the owner.  That motor has never been on a dyno. It is tuned entirely from data logging.

<<<<<  snip  >>>>>>>>

Here are a couple of screen shots that help explain how MLV HD does autotune.

In this screen shot, you see on the left, the Motec Target AFR is shown as it relates to Engine speed and Inlet ManifoldPressure.

http://www.nbs-stl.com/RxpxTuning/Autotune%20Concept.png

In the center is the AFR that showed up at the wideband sensor.On the right is effectivly the average multiplier that needs to be used to adjust the ECU fuel table. If you see a clear and consistent pattern of blue or red, the fuel table needs significant adjusting.

The trick is that you are limited by the ECU to make adjustments in specific cells. These cells are normally about 10 KPA and 500 RPM steps. Tuning winds up being a big game of averages. This is where MLV and the table generator makes this all way faster than any other way I have ever seen to tune a motor. Essentially MLV HD bit-bangs all the data down to an adjustment map. This map can easily be adjusted to have the same bins that your tuning software is using.

http://www.nbs-stl.com/RxpxTuning/Autotune%20Concept%20Export.png

Have fun tuning and feel free to ask any questions.

Andy

[Mirrmu]

Thanks for topic whittlebeast, what would be the top 5 things i would look for when using log viewer mode,

At moment have it set up to show map, tp and vss(chart1), ve front, ve rear (chart2), advanve front and rear, knock front and rear(chart3)

[whittlebeast]

I would add the O2 sensor volts front and rear,  Pulse Width front and rear, VE New front and rear. 

From Pulse Width, we can easily calculate Duty Cycle front and rear.

I don't recall if you have gear available in the logs.  If not, it is fairly easy to calculate gear by the formula

Gear Ratio = RPM/Speed

I can show you how to do this if you have never set up calculated fields.  It is really easy.

Andy

[whittlebeast]

In the Harley world, assuming you are running narrow bands, I am looking for places that the VE New is consistently different than the VE.

You can create a VE adjustment map by creating a field named VE Multiplier and define that field as

VE New Front / VE front  That will give you a fairly good where the VE tables are needing work.

I also tend to plot RPM x MAP and the knock channel looking for patterns there.

Keep in mind that you can use scatter plots to look at HUGE log (like several hours worth) all in one screen shot.

Andy

[Mirrmu]

Thanks, i will start to set things up and watch for differences with VE new to VE

Running NB but am considering buying the AT-100 kit

[whittlebeast]

This stuff gets really fun if you have a wide band in the logs.  Adding filters to your bag of tricks makes it even more interesting.   Things like show data when the motor is warm and only in 2nd to 4th gear..

I will be happy to help.

Andy

[whittlebeast]

Here is two different hulls on the dyno of the same motor and tune.  Look how consistently you can find a lean spot in the tune.  I can do almost exactly the same thing on a big hill in say third gear.  Lean spots in the tune jump right out at you if you have the tools.  Lucky, all it takes is a little software and be willing to look at the data you already have at your finger tips.

http://www.nbs-stl.com/HarleyTuning/TTS%20Tune%2003.png

If you have access to a Powervision, you can do this logging on any Harley,  Even if you happen to have a TTS or SEPST as tuning SW.

Andy

[Mirrmu]

whittlebeast, since that upgrade of MLV HD i have had nothing but trouble with the software, been in commuication with efianalytics, yet to find a solution (is a registered version)

[whittlebeast]

What issue?

What type logs are you attempting to open?

[Mirrmu]

powervision logs, i get them from the PV, open MLVHD, open file and they just dont load, it may take 30-40 secs or I have to move through the menu hitting the different tabs, sometimes nothing happens

in log viewer the charts all appear but thats it, 5min log runs but nothing to play

prior to update everything worked fine

[whittlebeast]

Street tuning vs dyno tuning.

Look at these two plots and think thru what tuning method will generate a more complete tune.

Dyno tuning (overly controlled)

http://www.nbs-stl.com/HarleyTuning/Harley%20Engine%20Dyno%20Trace.png

vs street tuning (real world tuning like you ride)

http://www.nbs-stl.com/HarleyTuning/Harley%20Engine%20Trace%202.png

Green is idle
Black in the middle is the typical riding range where you spend 70 or 80% of your riding.  Note that this is a Sporty.  Your area may be a little different.
Red is the higher power section of the map.  More power as you go up and to the right.
The purple is trailing throttle where the motor is dragging the bike generally to a lower speed.

Andy

[whittlebeast]

Here is the entire 350000 records data log rolled into an average AFR for each tuning cell.

http://www.nbs-stl.com/HarleyTuning/Harley%20Engine%20Trace%202%20Histogram.png

Andy

[FLTRI]

Just my opinion Andy, but I HATE those RPM break points! ie: "4842.8" rpm? 
Bob

[whittlebeast]

I had auto generate points turned on.  You can set those to anything you want.

Andy

[FLTRI]

I had auto generate points turned on.  You can set those to anything you want.

Andy

Why would you not want/need the rpm break points to be the same as the tuning software you are using?
Bob

[whittlebeast]

For example you could have RPM on the bottom, MAP up the side and then VE New in the field to generate your next tune.  Then add a few filters to throw out any data you want to throw out.

Or you could put in the points for your timing map and plot knock in the field.  Add the filter show only knock and poof, you have only the cells where knock is happening.

I very often create a cell AFR/Target AFR to create an average correction in the field.  A quick pass thru Excel to apply the corrections and copy paste right back into the tuning software that you are using.  That way I can mix and match logging software and tuning software.

I tune my Bosch ECU based on what I logged on the PC5 software all the time.

Have fun tuning

Andy

[whittlebeast]

Post up a big log and let's see what it shows.  Ride the bike for about an hour with the logger running the entire time.

Andy

[whittlebeast]

Feel free to post up before and after logs.  We would love to see what pops up.

Andy