This Page should answer most of your Duramileage questions. If you need more information please do not hesitate to call or email us.
GENERAL DURAMILEAGE TUNING QUESTIONS
Question: What is your Return Policy?
Answer: We give you a no hassle 120 day Money Back Guarantee on all “Duramileage” labeled
(Products like exhaust and air-intakes
made by other manufactures are 30 Day Return Policy and only if the
product has never been installed.)
Question: What can I expect from your
Answer: Roughly 4-7 MPG increase in
fuel economy over what you are currently getting at 65mph highway and
around a 20% MPG increase while towing. City driving varies wildly
with each customer and therefore we can not predict the mileage
gains. Additionally you will also feel increase in throttle response
and less turbo lag. Customers report the power gain causes their
truck to shift less pulling loads.
Question: Will I lose “power”
since these are mileage tunes
Answer: NO... our custom mileage tunes
are designed to increase the low-end torque. The best mileage tunes
increase performance between 60-80 Horsepower... 100-120ft/lbs
Question: Will the Duramileage Tuning
work on my truck model?
Answer: We have custom Duramileage
tuning for 2001-2010 Duramax 6.6L Engine
NOTE: We do NOT custom tune the ECM of
the 2011-2015 LML motors... for this model we sell a plug-in
microprocessor that works well at increase power and mileage.
Question: What Duramileage Tuning
Option is best for my truck year model?
Answer: Click on your truck's Year
model on the left-side buttons and you will see the options we
Question: Do I need a Mechanic to
install your tuning.
Answer: No... all our tuning options
(even removal of ECM) are very simple to install and instructions are
Question: What happens if my Dealership
reflashes the ECM... will I lose the Duramileage Tuning?
Answer: Yes... this is just a fact of
life but it does not happen often. Since we warranty the Duramileage
for the life of your truck all you have to do is call me and I will
send a Downloader with your Duramileage tune Free of charge.
Question: Is this safe for my truck?
Answer: We have tuned over 6000+
Duramax diesels without any major problems to date. The mileage tune
is mild enough that it does not put much added stress on your
Note: If your truck has a pre-existing
issue... increasing the performance of the engine can bring the
problem to the surface faster.
Question: Can I stack a chip with your Duramileage tunes... and
what will happen?
Answer: If you stack a chip then you
cancel out the key mileage calibrations if it is active. For example
you can run a Chip on the "stock" setting and get the
mileage gains. If you want power over mileage... just turn the chip
EZTUNER INSTALL QUESTIONS
Question: What functions does the
Answer: The EZtuner contains several
custom built mileage tunes that are “tried and true”.
Additionally you can check and clear Engine Codes, change tire size,
adjust speed governor, and
Question:What do I do when I plug in
the tuner it does not power up?
Answer: Check lighter fuse, if it
doesn't turn on then the lighter fuse is blown.
Question: Do I need to remove the
recommended fuses when checking Engine Lights?
Answer: NO... the fuses only need
removed when downloading a new tune.
Question: How long should the
Answer: About 7-10 minutes total.
Question: I was going through the
installation process fine until it said on the screen "Do not
disturb" and it stayed there for 10+ minutes. What do I do?
Answer: If it stays on that screen for
over 10 minutes unplug the tuner and start over.
PRETUNED/CUSTOMER ECM QUESTIONS
Question: I plugged a LMM Pre-tuned ECM and the remote start
doesn’t work what now?
Answer: Re-installing an ECM with trip a trouble code... stop by a local auto parts store and borrow then code scanner to clear it for free.
Qestion: Will this void my warranty?
Answer: By federal law (Magnuson Moss
Act) the Dealership is not supposed to void your warranty just
because you made an aftermarket change. Your warranty manual
stipulates that if the aftermarket change causes damage... they do
not have to honor the warranty to make the repair.
**Magnuson Moss Act states that
aftermarket equipment which improves performance does not void a
vehicle manufacturer’s original warranty, unless the warranty
clearly and conspicuously states that aftermarket equipment voids the