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Performance and Economy Fields |
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Performance and Economy fields are
simply turned on for you to start monitoring the Power and Fuel economy
of your vehicle. All you need is either a speed channel from your ECU
or a GPS attached for TunerStudio to capture speed from. When using a
GPS and 10Hz GPS is highly recommended.
In this section I will be
going over
how to fill in the required information for using the performance and
economy fields.
Performance Fields :
The performance
fields allow you to
make calculated estimation of several different types of data
like Aerodynamic Drag, net HorsePower ,
net Torque, and Rolling Drag .
Entering Vehicle Specifications :
Primary Injector Size (cc) –
Enter the size in cc/min of the the primary /
main injectors for your engine. If your injectors are
measured in lbs / Hr you will need to convert to cc
/ min. To covert from lbs / Hr to cc / min you will typically multiply
by 10.5 .
Fuel Flow Preferences – Here you will select the units of measurement for your speed and fuel consumption .
1. Speed Units – Miles Per Hour or Kilometers Per Hour
2. Fuel Consumption – US Gallons, Imperial Gallons, Liters
Input Source – Here you select what input drives your speed measurement . The options
in this drop down will vary with ecu type and firmware .
2. VSS 1 and VSS 2 –
Are typically a option you will see with MS2,s and MS3,s
this allows you to use a ADC
in your MegaSquirt to read in a signal
from a factory
or aftermarket tranny or drive shaft speed sensor.
Vehicle Weight Units – Here you will need to select what units you entered the gross vehicle what in . You have to options lbs or kilograms .
Tire Pressure (PSI) – Enter the tire pressure that you commonly fill your tires to .
Frontal Area – Frontal area is a projected vehicle area as seen from the front . You may be able to find your vehicle's frontal area value in various online sources or find a technical drawing you can use to figure it out.
Frontal Area Units –
Here you will select the units in which your frontal area is measured
1. sqft – Square
Feet
2. m^2 – Square
Meters
Aerodynamic Drag Coefficient – is a figure that measures the force of air resistance on a object. You can typically find the (Cd) of your vehicle online
available HP &
TQ, HP, TQ, and DRAG.
1. OFF – No data will be captured
2. Log HP & Tq – This
option will allow you to select “Power”
and “Torque” from
the data log profile editor.
3. Log HP , Tq & Drag
– This option will allow you to
select “Power”
and “Torque” from the
data
log profile editor as well as
automatically puts
“Aerodynamic Drag”
, “Rolling Drag” , and Accel Power” in the logged fields menu .