BoonDocker ARCTIC CAT: Non-turbo Control Box 700/800/1000 (V3) - Manual (Page 9)

BoonDocker – 1585 Hollipark Dr. Idaho Falls, ID 83401 – 208-542-4411 / 877-522-7805
www.boondockers.com – email: [email protected] – fax: 208-524-7381
Revised 12-14-07 Page 9 of 19
N2O 32
Maximum fuel adjustment during last nitrous activation (blacked out
█ █ █
during nitrous
activation). This can be cleared manually and is always clear upon next nitrous activation.
This can be cleared manually and is always cleared upon next nitrous activation.
PSI 240
For systems without a N2O pressure regulator (NON in lower right-hand corner of Startup
Screen), this displays current nitrous tank pressure. For systems using a N2O pressure regulator
(ADJ or FIX in lower right-hand corner of Startup Screen), this shows the maximum nitrous
pressure during the shot, where the pressure is measured after the solenoid valve. The
maximum is averaged over a 1 second period.
MxTP 208 Maximum throttle position reading since this menu was last cleared or since engine was last
started.
Selecting Y will clear these values. Use any arrow key to select Y or N. Pressing “SEL” takes you to the Main Menu.
VI. Theory of Operation:
The Boondocker Control Box connects between the sled’s ECU (Electronic Control Unit) and the fuel injectors. It does
not reprogram or communicate with the ECU. It only modifies the existing signals sent from the ECU to the fuel injectors.
By modifying only these signals, it is possible to make fuel changes while keeping the stock fuel map. This means the
ECU can still compensate for engine speed, throttle position, barometric pressure, engine temperature, air temperature, etc.
The Control Box can reduce fuel or increase fuel amounts for certain rpm ranges and load conditions. This is done by
changing its fuel adjustment settings by using the buttons and LCD display. As with tuning a carburetor, it is possible to
go too rich or too lean!
The Control Box also adds fuel when nitrous oxide is injected (only with optional Boondocker nitrous kit). The amount of
fuel added depends upon the pressure in the nitrous bottle plus user settings.
Note: Be sure you know how to properly tune an engine before you adjust the fuel settings! Use of oxygen sensor, EGTs
and plug and piston readings are highly recommended when tuning.
VII. EFI Tuning Suggestions
Each Fuel adjustment setting goes from –99 to 127. Positive numbers add fuel and negative numbers subtract fuel. The
Control Box will not prevent a lean burndown! You must take the proper tuning steps the same as if you were tuning a
carburetor.
The maximum is set to 127. This does not mean you have an effective range all the way to 127 – you will likely max out
the injector before this setting is reached. Your usable adjustment range (max value) is dependent on how long the ECU
already has the injector on. This will vary depending on rpm, throttle setting, temps, and can be different from sled to sled
even of the same model.
Exhaust Gas Temperature gauges can be an effective tuning tool, but they are not a substitute for reading spark plugs and
piston wash and feeling how the engine runs. Use EGTs only as a backup to verify what you see. They can be misleading
under certain conditions and safe readings can vary greatly from engine to engine depending on such things as probe
placement, fuel, timing, pipe design, porting, etc.
Tuning tips:
Important: Find the settings where your motor runs rich before you decide to go lean!
1. Tune with the engine and pipe at operating temperature. The engine’s ECU will make adjustments as the engine
warms up – you might think the engine needs leaner settings then later realize you are too lean once the engine
warms up.
2. Use the Load/Save Map feature to quickly change and compare fuel settings when testing. This can also be
useful for riding under different conditions. For example, changing elevations or temperatures may require
different adjustments if the stock ECU does not compensate properly for your modifications. For drag racing,
you might want to run richer settings for longer distances than you would for short distances.