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Controlling nitrous the old fashioned way using hardware switches on throttle bodies and various RPM or speed switches can be cumbersome and error prone. DSMLink provides a somewhat cleaner version that's more tightly integrated with all the things the ECU is monitoring already anyway. IMPORTANT NOTE: Please be aware that a master control switch is also highly recommended for use in conjunction with DSMLink's nitrous controls. You do NOT want a spurious nitrous control signal to get through to your nitrous and fuel solenoids while you're cranking, for example. Use a master control switch along with DSMLink's controls to help prevent potential damage.
To activate the nitrous and fuel solenoids, DSMLink takes over control of the fuel pressure solenoid line. When activated (by selecting Enable Nitrous control above), this line no longer behaves like the factory intended. Instead, the line will be deactivated (open) while the nitrous parameters are not satisfied and then activated when they are. Additional logic inside the ECU will prevent a state change within 100ms of the previous state change. Also, when clutch switch control is activated (either in the RPMs or ALS dialog), nitrous controls will be deactivated when the clutch switch indicates that the clutch pedal is in. And, finally, nitrous controls are deactivated when any of the rev limits are reached. As an additional safety check, operation of the fuel pressure solenoid is completely disabled by default in a freshly powered up ECU. Meaning, when an ECU looses battery power, the state it returns to is not normal factory FPS operation. Instead, it starts up in a mode where the FPS line is simply not activated at all. If the user wants factory FPS operation, it can easily be enabled through the solenoid and signal controls provided in the Miscellaneous dialog box. |
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