Quote:
Originally Posted by janea1207
how can i use the virtual dyno? is a app?
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It's a free Windows PC based program
https://barnhill.bitbucket.io/
There are quite a few videos and tutorials if you Google it.
The key to using it is always doing your testing on a known flat section of road, then you can compare log for log to see changes, improvements etc.
You need to go into Car Editor and create a custom car as the default ones only go up to 335i, no 340i.
For 340i Auto I created a custom car with these variables:
Weight 3640 lbs
Drag Coefficient 0.29
Frontal Area 23.68 ft2
Tire Diameter 26.03 inches
Gearing
1 5.0
2 3.2
3 2.143
4 1.72
5 1.314
6 1.0
Final Gear Ratio 2.813
In the csv file that you load you only need column heading Time, RPM and TPS to get a dyno with power and torque.
If you also want AFR and Boost add those too. The column headings must be exactly as listed above unless you go into settings and assign custom column names.
TPS is throttle position sensor and for a valid log this must have values of 100 for each of the rows in the data log. I just open the data log in Excel and copy/paste the 100% accelerator rows.
After you load the data you select the gear that was used for the run and add passenger(s) weight. In options you can choose Dyno type and HP or KW and lb/ft or Nm. I've found DynoJet to be good to use.