Information: Back to PDA-Dyno™




Dyno Software

The Nology PDA-Dyno software is easy to use. An evaluation version can be downloaded from our Downloads page.

NOLOGY DOES NOT SUPPORT STREET RACING

WARNING: Obey all laws when using the PDA-Dyno™. The PDA-Dyno™ is not intended for street use. Use only in designated areas, closed courses and racetracks.

Use the PDA-Dyno™ with caution and emphasis on safety.

Don’t’ operate the PDA-Dyno™ while driving. Don’t take your eyes of the road.

 Theory of Operation

 A Dynamometer is used to measure engine power. Dynos are either crankshaft dynaos or chassis dynamos. Crankshaft dynos require the motor to be removed from the vehicle and the power is measured directly at the crankshaft. Chassis dynos test the power delivered to the wheelst. As such, the power figures measured are always less than with a crankshaft dyno.

The PDA-Dyno™ is a newly developed device that uses the OBD II data on all 1996 and newer automobiles to compute engine power, acceleration times, fuel economy, and more. The PDA-Dyno™ tests the vehicle in a completely real world situation that includes powertrain losses, drag from disk brakes and wheel bearings, rolling resistance of tires and aerodynamic drag. So, whether you drive a Truck or a Ferrari, the power calculations will correct for wind drag.

The PDA-Dyno™ will also correct for weather conditions and altitude. So, a vehicle dyno'd in Denver on a hot day will give the same results as a chilly day in San Diego. Measurements generated are comparable with one another around the world. 

Extensive comparison testing on the Dynojet chassis dynamometer has shown that the PDA-Dyno™ is extremely accurate.

Screen Shots

The Nology PDA-Dyno™ software is easy to use. An evaluation version can be downloaded from our Downloads page. The software is comprised of numerous screens some of which are shown here.

Edit File Attributes The Edit File Attributes dialog edits a Power Torque or Acceleration file.

File – file name.
Size – file size.
Make– make of the vehicle (e.g. Toyota).
Year – year of the vehicle (e.g. 2001).
Date –date of file creation.
Time – time of file creation.
VIN – the VIN number of the vehicle.
Note – an optional text note.
Dyno Setup Used On Run This shows the Dyno Setup parameters used on a run. Parameters such as vehicle weight, elevation and humidity are all saved at the time the run was performed. Get current weather conditions in your area here. Get vehicle data here.
File – file name.
Weight – weight of the vehicle including passengers.
Gear Ratio – the overall gear ratio of the vehicle, which includes transmission and axle.
Tire Diameter – the vehicle tire diameter.
Temp – current outside temperature.
Elevation – current elevation.
Humidity – current outside humidity.
Pressure– current outside altimeter pressure available here. Altimeter pressure is different than barometric pressure.
Drag – drag coefficient of vehicle. Available data here.
Frontal Area – frontal area of vehicle. Available data here.
Note – an optional text note. 
Gear Ratio Screen The Gear Ratio screen measures the overall gear ratio of the vehicle and computes a tire diameter.
Tire Diameter
Most car tire sizes are listed as width, ratio, and rim diameter (e.g. 205/65 R15). Enter the tire size using the Width, Ratio, and Rim Dia drop down lists. .
Measuring Overall Gear Ratio
The overall gear ratio is a combination of the transmission and the final drive gear ratio and tire size.
The Status field lists the current status of the gear ratio run, either:
Idle – no data is being gathered.
Countdown to Start – shows seconds until data collection begins.
Collecting Data – vehicle data is being recorded.
Power vs. Torque The Power vs. Torque screen analyzes data gathered from a vehicle run. The graph shows horsepower/torque over engine RPM. Vertical axis 1 shows power from 0 to 500 HP. Vertical axis 2 shows torque from 0 to 500 torque. Horizontal axis shows engine RPM from 1000 to 11000.
The graph control support many features such as zoom and scroll. 
The Run button is  for starting a dyno run. The Stats button shows horsepower and torque statistics. 
Power vs. Torque Run Two files are required to perform a power torque run: a Power Torque file and a Dyno Setup file. 
The Status field shows the current status of the run, either:
Idle – no data is being gathered.
Countdown to Start – shows seconds until data collection begins.
Collecting Data – vehicle data is being recorded.

Performing a Power Torque Run Pressing the Start Power Torque button starts the 10-second countdown. Get the vehicle moving in the gear the run is going to be performed in (e.g. 2nd gear). The engine RPM should remain under 2000 RPM and the throttle steady. At the end of the countdown, floor the accelerator to achieve maximum acceleration.

Power Torque Statistics The Power Torque Statistics dialog calculates the peak horsepower and torque at RPM values for the currently opened Power Torque file.
File – Power Torque file name.
Peak Power – peak horsepower output during run.
Peak Power RPM – RPM peak power was achieved.
Peak Torque – peak torque output during run.
Peak Torque RPM – RPM peak torque was achieved.
Acceleration Screen The Acceleration screen analyzes acceleration data gathered from a vehicle run.
The acceleration graph shows the relationship between vehicle speed over time. Vertical axis shows the vehicle speed from 0 to 160 MPH. Horizontal axis shows the time from 0 to 24 seconds. 
The graph control support many features such as zoom and scroll. See Graph Screen information on the usage of the graph control.
Acceleration Run Two files are required to perform an acceleration run: an Acceleration file and a Dyno Setup file.  The Status field shows the current status of the run, either:
Idle – no data is being gathered.
Waiting to Start – waiting for the vehicle to start moving.
Collecting Data – vehicle data is being recorded.

Performing an Acceleration Run Press the Start Acceleration button and floor the accelerator when ready.  As you accelerate down the track, you may stop the acceleration run at different data points depending on the data you’re trying to collect. Such as:
0 - 60 MPH1/8 mile1/4 mile 
Acceleration Statistics The Acceleration Statistics screen computes times and horsepower values based upon how fast the vehicle accelerates.
File – Acceleration run file name.
Top Speed – maximum speed achieved during the run.
0 to 60 Time – how fast in seconds the vehicle traveled from 0 to 60 MPH.
1/8 Mile Speed – how fast at the 1/8-mile mark.
1/8 Mile Time – time in seconds, the vehicle traveled a 1/8-mile.
1/4 Mile Speed – how fast at the 1/4-mile mark.
1/4 Mile Time – time in seconds, the vehicle traveled a 1/4-mile.
1/4 Mile HP – a rough calculation of horsepower based strictly on 1/4-mile time and vehicle weight.
N/A will be displayed in a column if the vehicle didn’t travel far enough to compute the statistic.
Fuel Economy The Fuel Economy screen computes instantaneous and trip MPG. One other sensor can also be monitored along with Fuel Economy.
Pressing the Trip button toggles the Miles Per Gallon view between instantaneous mode and trip mode.
The fuel economy feature is only available on vehicles equipped with a mass airflow sensor (MAF). The Sensor Select screen has a list of sensors supported by your vehicle.
Demo Mode Demo mode simulates all vehicle data. This mode facilitates learning about the scan tool features without connecting to a live vehicle.
Enable Demo Mode
Demo mode is enabled from the Connect screen. Select the “Connect to Vehicle Demo” checkbox on the Connect screen. Press the “Connect to Vehicle” button. With demo mode enabled, all vehicle data is simulated – even if the scan tool is connected to a vehicle.
PDB Converter The PDB Converter Windows application converts a Palm scan tool databases into a CSV file suitable for import into a spreadsheet application such as Microsoft Excel. Once the data is imported into the spreadsheet, numerous data manipulations are possible such as graphing data.
The PDB Converter application will run on Windows 95, 98, ME, NT, 2000, and XP.

The CSV file is a tabular format of data placed into rows and columns. The first row contains basic file information as saved on the Palm:

CSV File in Excel

Download PDB Converter (.zip)

 

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