The Second Easy Way to Improve Gas Mileage: Engine Reflash
This is an easy way to get more gas mileage and more
horsepower. However this isn't an option for every car. Custom engine
management programs are usually marketed toward people wanting more
horsepower. And people that like horsepower buy performance cars.
So most average cars on the road may not be able to enjoy this option.
However, everything seems to be available to American pickup trucks
and mechanically related SUVs.
What makes this easy is that all the engine tuning
has already been done. Most of these manufacturers sell a 'canned
tune' which is a program file ready to install in your vehicle.
Some sell a few variations of the canned tune. There is usually
a canned tuned designed to optimize engine power and often a second
canned tune to optimize gas mileage. The canned tunes should increase
both power and gas mileage, but one is weighted one way more than
Some of these companies offer some variation on a
customizable engine tune. Don't worry about doing this unless you
have a wideband oxygen sensor kit to observe fuel stoichiometry
and a way to measure engine power and acceleration.
See how a canned tune affected the Effcient-Mileage
To find out if your car is supported do a web search
on "your car make + model + reflash." Or go to the websites
of companies that manufacture reflashers. Not all of the new engine
programs are equal. Join a web forum dedicated to your make and
model and ask people what they've tried and how it worked for them.
GM refers to all brands sold by General Motors. Those
include Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Oldsmobile,
Opel, Pontiac, Saab, Saturn, and Vauxhall. Chrysler refers to all
brands sold under the Chrysler LLC, Chrysler, Dodge, Plymouth, Jeep,
Eagle and Sprinter. Using Dodge alone usually implies Dodge trucks
or the Viper. Ford refers to all brands sold by Ford Motor Company,
Ford, Lincoln, and Mercury. Even though Ford owns Mazda and Volvo,
those will be identified separately in this list.
For GM and Ford
For GM, Ford, and Chrysler
For GM, Ford, and Chrysler
For GM, Ford, Chrysler and Nissan (Infiniti)
For most all makes and models
For GM, Ford, BMW, MINI, and Mazda MX-5
For GM, Ford, and Nissan
For GM, Ford, Dodge trucks, and Honda Insight
For Subaru, Mitsubishi, Mazda, and Nissan (Infiniti)
For GM, Ford, Dodge, Nissan, Mercedes, and Volkswagen
For Mitsubishi and Subaru
For Audi, GM, Ford, Opel, Saab, Skoda, Volkswagen,
There is a very mild risk here that these new engine
management programs could damage the engine through knock, heat
or who knows what. If that turns out to be a problem, these devices
can reinstall the car's original stock program. California may have
legal objections to engine computer reflashers. If the vehicle pollutes
more after a reflash I would love to know about it. Try it and see
what happens. Just don't blame the author if it doesn't work out
because I'm not responsible for the actions of others. I'm just
sharing information. But some might consider that to be the most
dangerous of professions.
By the way, 'engine computer' is abbreviated in different
ways. This is good to know if you do a google search.
ECU: Electronic Control Unit
ECM: Electronic Control Module
EFI: Electronic Fuel Injection
PCM: Powertrain Control Module
Go to the next step to improve engine efficiency,
Step 3: Improved Maintenance
Wiper Arm Adjustment
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