User guide
8 96815 v.3.0
Dear Customer,
If you have any questions 
concerning the installation 
of your Banks Six-Gun Diesel 
Tuner, please call our Technical 
Service Hotline at (888) 839-
2700 between 7:00am and 
5:00pm (PST). If you have any 
questions relating to shipping 
or billing, please contact our 
Customer Service Department 
at (888) 839-5600.
Thank you.
The Banks Six-Gun Diesel Tuner has six 
power levels that you can adjust with 
either the Six-Gun switch (supplied) or 
the optional Banks iQ (sold separately).
Banks iQ is a versatile device that gives 
you total control of your Banks Six-
Gun Tuner. With a touch of your finger 
on the bright, full-color LCD display, 
you can adjust power parameters, set 
system warnings and alerts, see vital 
engine functions at a glance, and more. 
Evaluate your changes by running 0-60, 
1
/
4
, and 
1
/
8
 mile performance tests. You 
can even scan, read and clear OBD II 
diagnostic trouble codes.
Banks iQ doesn’t stop there. It’s a 
true in-car PC packed full of extra 
functions. Listen to your favorite tunes, 
watch videos, play games, review 
Windows
®
 Office documents, and more. 
Expandable and upgradeable, it comes 
fitted with a rechargeable battery and 
includes accessory cords. You’ll quickly 
discover Banks iQ is the device you’ll 
use every day, both inside and outside 
your car.
The Six-Gun Diesel Tuner comes with a 
Six-Gun switch that has six selectable 
power levels. The Six-Gun switch is 
included in the Six-Gun Diesel Tuner. 
Level 1 is stock. Each additional higher 
level adds approximately 20% of the 
available power increase. 
To prevent damage to the factory 
transmission, Banks recommends 
that both automatic and manual 
transmission vehicles do not exceed 
Level 4 while the vehicle is experiencing 
load (towing, climbing a steep grade, 
carrying a load, etc.). 
To use the higher levels of the Six-Gun 
Diesel Tuner while towing or climbing, 
airflow improvements must be made 
to lower the exhaust gas temperature 
(EGT) entering the turbo. The EGT should 
not exceed 1400º F for more than a few 
seconds. Elevated EGT can damage the 
turbocharger and the engine.
ATTENTION! Before proceeding with 
these instructions, please carefully 
read the DISCLAIMER OF LIABILITY 
and LIMITATION OF WARRANTY 
statement located on page 4 of this 
manual.










