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Instructions
1. Choose the injector model.
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2. Define the engine displacement with the slider control, or by entering the number directly into the value box below the slider. Do not use the advertised value – Use the value from the stock calibration.
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3. Choose the number of cylinders. Four for the Pro R.
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4. Define the method of Aspiration.
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5. Define the Pressure Reference.
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6. Define the Fuel Pressure. The allowable range is from 29 to 101.5 psi. Fuel Pressure varies among models and years. In most cases, you can find the stock Fuel Pressure in the repair manual, or from the calibration. To our knowledge, the Pro R is 58 psi (4.0 bar). The Fuel Pressure Deviation Correction Factor is 1.0 at 58 psi, which is the intended pressure.
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7. Define the fuel type.
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8. If using gasoline/ethanol blend, define the ethanol content of the fuel, from 0-98%. Note that your UTV was calibrated at the factory with Emissions Certification Fuel which contains 10% ethanol, as does most pump gas.
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9. For custom fuel, enter the stoichiometric air fuel ratio and density. For methanol or gasoline/ethanol blend, these values are not used.
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10. Enter the Stock Injector Slope from the factory calibration. This is used to correct pulseiwdth axis values for individual cylinder trims.
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Stoich AFR
14.03
Inj. Slope (ms/%)
0.12223
PW Minimum (ms)
0.244
PW Factor
1.3235
Voltage Offset
Voltage (V)
8
10
12
14
16
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Offset (ms)
2.032
1.466
1.154
0.940
0.790
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Inj Const Mult
Pressure (psi)
50.5
52.2
54.0
55.8
57.7
59.6
61.6
63.7
65.8
68.0
70.3
72.7
Flow Multiplier
1.072
1.054
1.037
1.020
1.003
0.987
0.970
0.954
0.939
0.923
0.908
0.893
Inj Flow (cc/min)
1251.8
Inj Flow (g/min)
907.1
Injector Dynamics Data Generator
HP Tuners - Polaris Pro R
InjectorModel
1050 XDS
1300 XDS
1700 XDS
2600 XDS
Displacement (cc)
1999.7
Cylinders
1
2
3
4
Aspiration
Naturally Aspirated
Forced Induction
PressureReference
Atmosphere
Intake Manifold
Fuel Pressure (psi)
58
FuelType
Gasoline/Ethanol
Methanol
Custom Fuel
Gasoline/Ethanol - Specify Ethanol %
Methanol - No Input Required
Custom Fuel - Specify Stoich AFR and Density
Ethanol %
10
Stoich AFR
12.71
Density (g/cc)
0.815
Stock Inj Slope (ms/%)
0.09235