BoonDocker POLARIS: 11-12 PRO 800 Turbo 3D Tuning - Manual (Page 12)

BoonDocker Performance – 2379 Heyrend Way, Idaho Falls, ID 83402 – 208-542-4411 / 877-522-7805
www.boondockers.com – email: [email protected] – fax: 208-524-7381
Revised 1-20-11 Copyright © 2010 Boondocker Page 12 of 14
Tuning tips (continued):
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.
3. One method for finding out where a fuel adjustment setting is effective, greatly increase only that setting. Run
the engine to find out when it suddenly becomes too rich – this is where that setting is effective. Be careful –
you can easily flood the motor, especially with low (LO) load or low RPM settings. If this happens, to restart
the engine you may have to pull several times with the throttle held wide open.
4. The Stats Capture feature can be used to determine RPM and whether the load setting is LO, MD, or HI. The
handlebar button can be configured to capture these stats (see nitrous configuration section). From the Main
Menu, select N2O, set Btn to CAP. Whenever the button is pressed, the Stats: Capture screen will be
displayed. The current stats will be captured when the button is released.
N2O Menu in “Capture” mode:
Fuel TPS RPM Btn
050 OFF OFF

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 OFF

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.