Banks Power Dodge Trucks: (Diesel ’03 - 07 5.9L Cummins) Tuner- Six-Gun Diesel Tuner (235, 250, 305, 325 HP Dodge 5.9L Cummins (24-valve) Trucks) '03-05 Compatible with Optional PowerPDA User Manual

Page 28

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96807 v.9.0

Section 6

CHECKING ENGINE PERFORMANCE

The Six-Gun Diesel Tuner requires the

engine coolant temperature (ECT) to be

above 110º before it will add fuel. If the

optional Banks PowerPDA or DynaFact

®

gauges are installed, observe the

operation of the boost and pyrometer

(EGT) gauge values while driving under

varying conditions. Turbocharger boost

pressure will increase as a function of

load and engine RPM, thus the engine

will produce little boost while cruising

at light throttle, with maximum boost

while climbing hills heavily loaded

during acceleration. Note the boost

level seen during hard acceleration

with a given load. If performance

seems to have deteriorated sometime

in the future, the maximum boost

figures may be compared to see if

boost has dropped off. Lower boost

may be caused by turbo ducting

leaks, a malfunctioning wastegate or

fuel injection pump, or dirty air filter.

Typical maximum boost pressure

settings will vary considerably with

stick or automatic transmission

options, year model of vehicle and

altitude.
NOTE: Before key-off, check tuner for

error codes.

Use your Banks PowerPDA or EGT

gauge to monitor exhaust gas

temperature (EGT) in the engine. At

idle, exhaust gas temperature will

be very low, perhaps only 300°F. As

the engine is accelerated for higher

speeds with greater loads, the EGT

will rise. The highest EGT will be seen

under maximum load at full throttle,

such as climbing a steep grade with a

heavily laden vehicle.
To avoid heat damage to various

engine components it is recommended

that the exhaust gases cool below

400º before the engine is shut

down. Your Six-Gun Diesel Tuner is

calibrated to maintain a maximum

EGT of 1350°F. You may experience

brief excursions slightly above 1350°F

under acceleration. This is normal and

EGT should return to 1350°F or below

within a few seconds. If you find that

EGT remains high for any length of

time, check for boost leaks or a dirty

air filter.

-END, SECTION 6-

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