Increase Diesel Fuel Mileage in Your 2008 Ford F250 6-4L

Increase Diesel Fuel Mileage in Your 2008 Ford F250 6-4L

So you own a new 2008 Ford Superduty.. Is fuel absolutely killing you yet? Are you getting 10-12-13mpg?

Don’t start getting down yet.. all the new trucks are: The new Duramax Chevy, The Dodge Cummins, and as you already know the Ford. They all have new emissions crap to deal with, and it is causing big problems for fuel efficiency.

Since we aren’t going to ALL start making diesel in our backyard from methanol and peanut oil, we need another solution. Its an automotive power programmer, and its called a Superchip Flashpaq. This easy to install module will simply plug into your diagnostic port underneath your dash, you will answer a series of yes or no questions, and the program will load into your vehicle and work with its computer to give you a gain of about 1-2 miles per gallon, and the best side feature is…. Your looking at up to an additional 78 horsepower.

The Flashpaq is the only programmer on the market for the 08′ Superduty that will tune both your engine and transmission for optimal performance.

The key features for the Superchip Flashpaq:

-Increased Horsepower and Torque

-Internet Updateable

Internet Updateability: The Flashpaq is fully Internet updateable via Superchips state-of-the-art Internet update system. Users can add new features, application support for new model years as developed by Superchips.

-Easy Installation

-No Tools Necessary

-Improved Fuel Economy

-Optimized Driveability

-Diagnostic Trouble Code Reading Capability

Diagnostic Trouble Codes: The Superchips Flashpaq can be used as a scan tool to retrieve and clear diagnostic trouble codes. This feature allows the user or dealer to understand the purpose and meaning of a “check engine” lights triggered by the vehicle’s computer.

These are the additional features on the Flashpaq for the 08′ 6.4L Superduty

-Choose from Three Available Performance Settings

-Update Tuner via the Internet for Latest Calibrations

-Enhanced Shift Firmness

-Raise Speed Limiter

Speed Limiter: The vehicle manufacturer limits the speed of the vehicle using a speed limiter. Superchips provides an option to remove the speed limiter. The vehicle speed limiter removal feature is intended for race applications only and should never be used for speeding on public roads or highways. If the speed limiter is removed the consumer must ensure the vehicle is properly equipped for racing and to handle speeds in excess of the factory speed limiter.

…and coming soon you will be able to:

-Recalibrate Speedometer for Larger “Tire” Sizes ” Speedometer Correction (coming soon): This feature allows the consumer to recalibrate the vehicle speedometer to provide an accurate reading when larger or smaller aftermarket wheels and/or tires are added to vehicle. This will be offered as a free feature upgrade to the product that can be downloaded via the Superchips Internet update system. Visit for details on the Internet update system.

-Get Available Data Acquisition at ” Data Acquisition: This basic Data Logging package allows users to log speed and distance with their Flashpaq handheld device. Popular tests include 0-60 times, quarter and eighth mile speeds and holeshots. Download it today free of charge. Visit for more details.

These updates will be able to be downloaded to your Flashpaq right from home. Your flashpaq is going to come with a usb port on the box, and a usb cable to attach it to your computer. Just go to, and you can always download the latest updates to your Flashpaq right from your computer. How much easier does it get??


Flashpaq for the 08 Superduty are as follows:

1. Performance Tune

– Max 78 HP – Max 146 ft lbs torque – NO TOWING permitted

2. Tow Performance – Max 51.3 HP – Max 110 ft lbs torque – 6000lb Tow Limit

3. Transmission Only – Optimizes Transmission Performance

4. Stock – Completely restore ALL factory settings

Performance Tune is the highest level, more often referred to as the “race”, “top horsepower”, “fast”, “extreme” setting. You would put it on this setting to reach the highest horsepower level, and as you may have guessed, No… you should not expect better fuel efficiency in this setting. It is also not recommended to leave this setting on for long periods of time. Also there should be NO TOWING on this setting. You will want to bring it back down to a normal setting to increase your fuel economy, and have smaller hp gains.

Tow Performance is the medium level. This program is recommended for towing applications. Please note that this program does not in any way raise the vehicle manufacturer specified tow limit of the vehicle. This Performance Tow program provides an increase of 51.3 rear wheel horsepower and 110 lbs. ft. of torque.Towing should be restricted to about 6000lb.

Transmission Only optimizes your transmission performance.- With this program only the TCM is reprogrammed by the Flashpaq. This program will improve shift firmness and shift points to enhance vehicle performance. Quicker, firmer upshifts and downshifts will be achieved and will enhance both 0-60 and 1/4 mile track times.

Stock- This is the original file created by the vehicle manufacturer. The user has the option at any time to completely restore the vehicle ECM and TCM to the original stock status. The ECM/TCM operating systems are not permanently modified in any way.

This programmer is designed help the overall drivability of your Superduty, while increasing your fuel economy.

How it Works: The Flashpaq programmer connects to the OBD2 port of the vehicle through the attached OBD2 cable. The Flashpaq downloads and stores the stock engine and transmission file to the device memory. The user then answers questions to select desired options and chooses one of three tuning programs offered by Superchips. Once the program is chosen by the user the Superchips files are uploaded (programmed) to the engine control module and the transmission control module to optimize vehicle performance including the options chosen by the user.

The Superchips Flashpaq programmer is the only tuning device on the market of its kind that can program both the transmission control module (TCM) and the engine control module (ECM). This capability allows Superchips to ensure that transmission settings are optimized to function properly with the changes to fueling through the engine control module (ECM) and therefore improve overall drivability.

**You can usually expect approximately 1 to 2 miles per gallon increase while in lower stages. my4x4online nor Superchips guarantee any increase in fuel efficiency. It varies depending on driving habits and conditions.