Two Brothers Racing Yamaha R6 User Manual
Page 5
ITBR001-212
2008-10 Yamaha R6 - 5
Figur
e
G
Figur
e
H
unplug
10 Unplug the stock wiring harness from the O2 sensor as shown in Figure G.
The O2 sensor connector is a black 4-pin connector located under the fuel tank near
the right hand side of the frame.
11 Route the Juice Box Pro 4-pin connectors to the location shown in Figure G.
12 Attach the 4-pin connectors from the Juice Box Pro to the stock wiring harness and
O2 sensor.
13 Lower the fuel tank and verify the connectors and harness do not interfere with or
get pinched by the fuel tank.
14 Reinstall the main seat.
The Juice Box Pro for this model controls the stock closed loop area. This area is
represented by the highlighted cells shown in Figure H. The Juice Box Pro is designed to
achieve a target AFR of 13.6:1. To use this Juice Box Pro you must retain your stock O2
sensor.
It is not recommended to alter the values in the highlighted area unless instructed to do
so by a Juice Box Pro technician.
Note:For the closed loop area to work correctly, you must block the clean air
injection system. Block the hose on the right side of the air box that leads to a valve
sitting on top of the cylinder head cover.
Tuning Notes
This bike uses a fly-by wire system therefore conventional tuning can not be performed for all RPM and throttle ranges.
The grey wire from the Juice Box Pro is attached to the throttle blade angle sensor of the throttle bodies which is not directly correlated to the throttle grip
position. When setting the throttle position in the Top Tune software, we recommend on resetting only the closed position after the bike has completely
warmed up. Use the arrow key (<) next to CLOSED to perform this step and then click OK. Do not try to set the OPEN position unless you are on a dyno
and above 9000 RPM.
You will notice in the maps there are not detailed values below 7000 RPM at 100% throttle and below 5250 RPM at 60-80%. This is because the throttle
blades will not open more than 60% below this RPM range no matter how much throttle input is given. Therefore this area can not be tuned.