BoonDocker POLARIS: Non-turbo Control Box 2011-12 PRO RMK 800 User Manual
Page 5
BoonDocker Performance – 2379 Heyrend Way, Idaho Falls, ID 83402 – 208-542-4411 / 877-522-7805
www.boondockers.com – email:
– fax: 208-524-7381
Revised 1-20-11
Copyright © 2011 Boondocker
Page 5 of 17
3.1 Fuel Screens (RPM Adjustments)
In the RPM screens (1 through 5), the Fuel Control Box allows fuel adjustments to be made according to the following two
factors: RPM and Engine Load.
RPM Regions:
In the example above, the 3000 screen sets the fuel level for near 3000RPM down to idle. The 5000 screen sets the fuel
level for RPMs near 5000. Between 3000 and 5000, the fuel adjustment will be proportioned between the two settings.
For example, suppose the 3000RPM fuel setting is at “4” and the 5000RPM fuel setting is at “8”. If engine is at 4000RPM
(half way between RPM ranges), the actual fuel adjustment made will be ½ of “4” and ½ of “8” which is “6”.
Load Ranges:
Each RPM Region is split into 3 load ranges: LO (low), MD (medium), HI (high). Each load range is roughly equivalent
to the throttle position divided into thirds: LO is closed throttle (idle) to 1/3 open, MD is 1/3 to 2/3 open, and HI is 2/3 to
full open. During light-throttle conditions (slow cruising or deceleration), the Fuel Control Box will use the LO RPM
settings to adjust fuel. During part-throttle conditions (normal or faster cruising), the MD RPM settings will be mostly
used. During heavy-throttle conditions (accelerating or heavy load operation), the HI RPM settings will be used.
M1U
LO MD HI•
•
•
3000 00 00 00•••
Below is a description for each field show in the above sample screen:
M1U
This displays current map that is being used – in this case, M1 stands for Map1, and U indicates the map is
Unlocked (changes are allowed). (Map storage, retrieval, locking, and unlocking are covered below.)
3000
This is the RPM Region for the fuel adjustments on this screen. In this example, this screen’s values will be
used near 3000RPM down to an idle. The effect of the 3000RPM setting tapers off until 5000RPM, while the
effect of the 5000RPM setting ramps up as RPMs go from 3000 toward 5000.
LO / MD / HI
These are the engine Load settings for each RPM region. Since engine load is directly related to
throttle position, each load range is equivalent to the following approximate throttle positions:
LO
= 0 up to 1/3 throttle
MD
= 1/2 up to 2/3 throttle
HI
= 2/3 up to full throttle
00
Fuel adjustment value. Each setting can go from –99 to 127. Refer to the EFI tuning section for general tuning
guidelines. A value of 00 means no fuel adjustment will be made and the original injector signal will be passed
through unmodified. Negative values will reduce the fuel. Positive values will increase the fuel. Each number
is equal to about ½% duty cycle which is ½% of the total available injector-on time.
3.2 Accelerator Pump
Fuel can be added or subtracted from the stock accelerator-pump fuel quantity. The accelerator pump is activated
when the throttle is moved from a low level to a significantly higher level. The setting parameters are as follows:
M1U
AM DR Sens•
ACEL
00 00 08
•
M1U
Map 1 is selected and it is unlocked.
AM
Amount of fuel to inject per stroke upon throttle activation.
DR
Duration of fuel injection counted in strokes.
Sens
Sensitivity of accelerator pump activation.