BoonDocker ARCTIC CAT: 800/1000 Turbo 3D - Manual (Page 12)

BoonDocker – 2379 Heyrend Way Idaho Falls, Idaho 83402 – (208) 542-4411
website: www.boondockers.com - email: [email protected]
Revised 03-14-07 Page 12 of 14
Fuel TPS RPM Btn
002 OFF ON

CAP
5. The handlebar button can be used to add or subtract a preset amount of fuel for interactive tuning purposes
(see nitrous configuration section below). From the Main Menu, select N2O, set RPM and TPS to OFF, set
Btn to TUN and adjust the fuel number as desired for the test (see example menu screen below). When the
nitrous button is pressed, this amount of fuel will be added or subtracted immediately from the current
settings for all RPMs and all loads. Use small numbers for this test, either positive or negative.
N2O Menu in “TUNE” mode:
Fuel TPS RPM Btn
002 OFF ON

TUN
Also consider the following:
A/F Mixture Generally EGT’s get hotter as the motor gets lean, but too lean and the temps can actually drop! As
oxygen is added, the flame gets hotter to a certain point, then too much air can can gradually cool
things off.
Detonation Detonation often requires an experienced tuner to detect – in most instances it cannot be
heard or noticed. Careful examination of the piston and sparkplug are required. Watch for
melted sparkplug electrodes, speckling on the sparkplug insulator, or shiny or gray flakes on
the electrode which could be melted aluminum from the piston. If possible, watch the crown
of the piston (near exhaust port) for a pitted or sand-blasted look. EGT’s can sometimes read
low during detonation – heat is going into the cylinder and piston instead of out the pipe.
Timing Timing can affect the pipe temperature. Generally if the ignition is retarded, more heat will build
up in the pipe. Too much advance may drop EGT temps, but increase cylinder temps. Stock
timing seems to work best for this turbo.
Fuel Different fuels have different specific gravities (densities) and other characteristics which can affect
your mixture requirements from one fuel to another – be aware of this if you change fuels.
Oxygenated fuel will run leaner than non-oxygenated fuel and is not recommended.
Lean spots Sometimes a motor runs hot at certain RPMs and throttle positions (usually in its mid-range) no
matter what. The fuel adjustment settings can be used to richen this up, but the engine may quickly
become too rich and run erraticly. Under light load conditions you can sometimes get away with
running hot for short periods of time. Under such conditions it is best to vary the throttle position
often and not stay at one throttle setting for long durations.
IX. Control Box Troubleshooting
Stuck Button
When the Control Box is first turned on, all buttons are checked to verify that a button is not stuck on. If a button is
detected to be on during power up, the button will be disabled and the following message will be displayed until
another button is pressed. To verify if a button really is stuck on, re-power the box without pressing any buttons.
Button is Stuck!
Note: A common problem is a bad ground connection on the sled causing the box to keep resetting itself. If a button
is being pressed when this occurs, the “button stuck” message will be displayed. Start the sled without pressing a
button and see if the message goes away. If it is not present, start looking for a disconnected ground on the sled (see
Other Issues below).