BoonDocker SKI-DOO: Non-turbo Control Box SDI 600/1000 4 INJ - Manual (Page 11)

BoonDocker – 2379 Heyrend Way Idaho Falls, Idaho 83402 – 208-542-4411 / 877-522-7805
www.boondockers.com – email: [email protected] – fax: 208-524-7381
Revised 11-07-07 Page 11 of 16
Increase the nitrous Fuel adjustment setting until you notice a drop in the power increase when using nitrous.
Oxygen, EGT, and rpm readings can be used to help determine when you are too rich. Be sure you have reached
this point before proceeding. Note this adjustment setting.
4. Only after step 2 or 3 is complete, start reducing the Fuel setting. Continue reducing the Fuel setting until a
maximum power increase is obtained. Again, note oxygen, EGT, and rpm readings, and do not exceed 2 seconds
of nitrous use which is just sufficient to get a good reading. A useful technique is to accelerate, allow rpm to
stabilize, apply nitrous, and notice maximum rpm, and if available, O2, and EGT readings.
5. If the Fuel is reduced but no power increase is noticed from the previous setting, this means you are lean. Note
this adjustment setting.
6. Increase the Fuel setting back to where it was before no additional power increase was noted in step 4. This
setting should be somewhere between the rich and lean settings. It is best to stay on the rich side.
7. After this adjustment is made, if the engine does not run perfectly smooth when using nitrous, do not use it! If the
exhaust note does not sound clean, the cause is likely detonation, which can quickly destroy the engine. Use
higher octane fuel, add more ignition retard, reduce the engine’s compression, or reduce the amount of nitrous
(see instructions for changing nozzles) before using nitrous again.
8. Follow this step only if you have an adjustable N2O pressure regulator and you desire to use pressure over 210psi.
Set the nitrous pressure to the highest pressure you intend to run (should be at least 210psi) and repeat steps 2 and
4-7 while making adjustments on the 340psi N2O Fuel setting.
Note: You do not have to calibrate at the high pressure shown on the screen (340psi). If you will not be
running higher than 210psi, then the second fuel setting is not required. Leave it at the factory setting.
Note: The high-pressure fuel setting (340psi) must be higher than the low-pressure fuel setting (180psi). If
you attempt to violate this, the low pressure setting will be reset to the high pressure setting.
Note 1: The RPM and Nitrous fuel adjustments are summed. Therefore, any changes made to RPM fuel settings will
affect the quantity of fuel delivered for nitrous. Therefore, for example, if the 7800 HI fuel setting is decreased
by X amount, you need to increase the nitrous fuel setting by X amount in order to get the same total fuel delivery
for nitrous.
Note 2: After initial tuning, any new performance enhancements to your engine will require re-tuning the EFI and nitrous
fuel delivery.
Note 3: All nitrous fuel settings are stored in the same map as the RPM settings. All changes you make become part of
the current map. The current map number is shown in the Main Menu.
VIII. N2O System Configuration
A. N2O Configuration Options
There are seven ways to configure nitrous activation using one of more of the following inputs: button, throttle position
(requires installation of Boondocker TPS kit), and rpm range. A brief description for each configuration is given below.
More details can be found in sections B and C.
1. Button only: Pressing the momentary button activates the nitrous and releasing the button turns it off. The
button can be configured to activate the nitrous regardless of TPS or RPM conditions.
2. TPS (Throttle Position Sensor) only: When the throttle is pressed beyond a point set by the user, nitrous is
activated. Nitrous is deactivated when the throttle returns to a point below the chosen threshold.
3. TPS and RPM: When the RPM and TPS are within a range set by the user, nitrous will activate. Nitrous will
turn off when the throttle is decreased (TPS is below the adjustable threshold) or when the RPM is out of the
selected range (lower than Min or higher than Max).
4. Button (N2O) or TPS: The handlebar button can be used in combination with the TPS. In this way, either the
throttle or the button can activate the nitrous. The button will always activate nitrous regardless of the TPS
condition.