ITBR001-269 www.twobros.com 2010 Yamaha YZ450F - 2
Selecting the Map Position
The J uice B ox Pro com es loaded with up to ten maps. U s ing a #1 Phillips
screwdriver, turn the map select dial to toggle between the loaded m aps. Refer to
the map position table below for the maps included in your Juice Box Pro.
Using the RPM Range Dials
The Low, Mid, and High RPM Dials refer to the RPM range, in thirds, of your
vehicle. Each dial allows +/- 10% fuel adjustment on top of what fuel changes are
done in the map. With the dial facing straight up, there is no additional fuel change.
For example, if your vehicle revs to 15,000 RPM:
• the low RPM dial will adjust 0-5000 RPM
• the mid RPM dial will adjust 5001-10000 RPM
• the high RPM dial will adjust 10001-15000 RPM
Using Top Tune
Take your tuning to the next level with the Top Tune s oftware.
1 Insert the CD provided into your computer’s cd-rom drive. The launch program
will run automatically.
If auto-run is disabled, double-click the My Computer icon then double-click the
CD drive icon. Double-click TBR Top Tune.exe to manually start the CD.
2 Click Install S oftware and follow the on-screen instructions to install the Top
Tune software. The Top Tune software and maps will be stored in C:\Program
Files\TBR Top Tune.
3 Click M ap Databas e. A ll m aps will automatically be installed to the C:\Program
Files\TBR Top Tune\maps folder.
1 Connect the US B cable from the computer to the Juice Box Pro. Verify the cable
is fully seated in the J uice Box Pro.
2 Run the Top Tune software by double-clicking the program icon installed on your
desktop or on your start menu.
3 Click Open Map File and select a map file.
4 Click S end M ap. You can send the map to any of the ten map positions.
The values in the map represent a percentage of fuel change over stock. A value of
10 in the map indicates at that throttle position and R PM range the vehicle will be
10% richer than stock. If the value is -10, then it would be 10% leaner than stock. You
have the ability to fine tune your fuel curve by altering these values. The Top Tune
software allows a value of +250 to -100 in each cell.
Ins t alling the Top Tu ne S oftw a re
Loading Additional Maps
Altering M aps Using Top Tune
USB Port
High RPM Dial
Mid Dial RPM
Low Dial RPM
Map Select
Status Light
(Power to Unit)
Position 0 Zero map
Position 1 Stock exhaust
Stock air fi lter
2010 Yamaha
YZ450F
(3 pages)
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