Banks Power Chevy_GMC Trucks: Duramax LMM (Diesel ’07 - 10 6.6L) Tuner- Six-Gun Diesel Tuner '07-10 (iQ) Compatible with Optional Banks iQ User Manual
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The Six-Gun Diesel Tuner requires the
engine coolant temperature (ECT) to
be above 110º before it will add fuel.
If the optional Banks
IQ
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, and/or 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 between automatic
transmissions, year model of vehicle,
and altitude.
Note: Before key-off, check tuner
for error codes. Use your Banks
IQ
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 400ºF before the
engine is shut down. Your Six-Gun
Diesel tuner is calibrated to maintain
eGts depending on power level.
Level
EGT
1-5
1350°F
6
1400°F
You may experience brief excursions
slightly above the temperatures listed
under acceleration. this is normal and
the eGt should return to or below
the proper temperature 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-
Section 6
CHECkING ENGINE PERFORMANCE