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4/3/2022 Notice! - Google changed how they handle permissions. This version will stop being updated! New link!
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https://docs.google.com/spreadsheets/d/1DqK6y1K3dt_guonDQFvrfaaKNQsZcAiRXWA2pYgzYnE/edit?usp=sharing
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Source Injector Data:http://siemensdeka.com/specsheets/FI114992cs.jpg
AKA: Ford M-9593-LU80
Author - seijirou msextra.com stangnet.com corral.net
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TunerStudio Screenshots Version:
Ultra 3.1.03
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Go to File -> Make a copy to make changes for yourself!

This is my attempt to automate dead time settings for Megasquirt 2 and Megasquirt 3 systems using manufacturer's injector data. Use at your own risk. This is based on Siemens Deka data sheets (see example link above) which are very similar to if not exactly the same as Ford data sheets.

For MS3 there is an attempt to calculate values for the 'Small Pulsewidth' section based on injector manufacturer 'Low Slope' characteristics. MS3 does not use a 'Low Slope' approach to small pulsewidth so the given output is a translation to virtualize low slope within the MS3 configuration. It is a theoretical approach at best and is not tested.

For advanced users the background calculations can be found on the Calculations sheet.
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User Input HereMS2MS3
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FPR SettingNOTE!Fuel Settings -> Injector Dead-Time/PWM
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Fuel Pressure (psi)39.15Keep the lowest PW that MS will use above this Target Min PW. You'll need to use data logging at low load/low RPM to see the lowest PW used. If it drops below the 'Target Min PW' value below then decrease the number of squirts used.Dead Time0.7413850866
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Injector CharacteristicsDead Time Voltage Curve
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Low Slope (lb/s)0.0281838221.85%
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High Slope (steady state) (lb/s)
0.020877Not a Setting - See note
Target Min PW (ms)		0.904428978711142.57%
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Break Point (lb)0.0000242112126.97%
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Min Pulsewidth (ms)0.599Fuel Settings -> Injector Dead-Time/PWM13112.73%
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Injector Dead Time @13.2V(ms)
0.819503565214100.00%
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Voltage Offset1590.01%
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62.811
Battery Voltage Correction(ms/v)
0.09996203415
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81.777
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101.288
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111.142
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121.017
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130.903
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140.801MS3X example
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150.721
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Example
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Fuel Pressure Low Slope Compensation
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20.010.7149
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30.020.6446
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39.151
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50.031.0402
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54.961.2271
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60.031.2215
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Fuel Pressure High Slope Compensation
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20.010.717Mainboard example
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30.020.8722
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39.151
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50.031.1334
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54.961.1883
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60.031.1984
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Fuel Pressure Break Point Compensation
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20.010.7149
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30.020.8756
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39.151
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50.031.0843
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54.961.121
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60.031.309
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Fuel Pressure Voltage Offset Compensation
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20.010.7149Voltage Curve Example
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30.020.6306
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39.151
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44.951.0908
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50.030.9903
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54.961.1848
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60.031.2383
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