BoonDocker POLARIS: Non-turbo Control Box 600/700/800 IQ Dragon - Manual (Page 8)

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 1-15-08 Page 8 of 14
Description of N2O Fuel Screen for ADJ regulator:
340 050
High N2O pressure fuel setting (fuel adjustment is centered at 340psi)
180 025
Low N2O pressure fuel setting (fuel adjustment is centered at 180psi)
Adjust the low pressure (180psi) Fuel setting first. Set your regulator pressure to 180psi +/-20psi (approximately
1 3/4 turns out on the adjustable regulator knob). The actual N2O pressure will be displayed after nitrous has
been activated in the upper right of this screen (displayed as “200” on the screen above).
Increase the low pressure (180) nitrous Fuel adjustment on the Control Box (displayed as “020” on the screen
above) 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 to the next
step. Note this adjustment setting.
3. Follow this step only if you have a Fixed N2O pressure regulator or a Non-regulated system: Select N2O from
the Main Menu.
Fuel TPS RPM Btn

050 OFF OFF N2O
Select Fuel. The following screen will appear:
N2OFuel F-Delay

050 000
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.