Bully Dog® - 6 Position 4-Bank Chip

4.51 reviews / Item # sp431
BULLY DOG® - 6 Position 4-Bank ChipBULLY DOG® - 6 Position 4-Bank ChipBully Dog Authorized Dealer
$63.97 - $457.07
● In Stock - Usually ships within 24-48 hours
Vehicle Specific
Fits Following Model(s):
  • View Product Options
Product Options
Add To Cart
Have a Question? 888.634.9437
Ask a Specialist: Live Chat
Authorized Dealer:Bully Dog
Lowest Prices. Price match guarantee
Guaranteed Fitment. Always the correct part
In-House Experts. We know our products
Easy Returns. Quick & Hassle Free
Select Product Options
Do not see your vehicle here? View similar products
Total: $0.00
Add To CartCancel

Product Details

Learn everything you want to know about this product
to make an informed purchase.

Bully Dog Accessories

6 Position 4-Bank Chip by Bully Dog®. Plugs into engine computer and provides 4 different engine tunes for improved power, economy, and drivability. Improves towing, removes speed limiter.

Bully Dog


  • Increases power and torque
  • Improves shifting
  • Increased Fuel Economy
  • Improved Drivability
  • Removes Speed Limiter
  • Adjustable on-the-fly
  • Choose tune appropriate for the road and load
  • A must for trailering

The chip works on 1995-2003 7.3 L Ford Power Stroke engines. The 1994-97 Power Stroke models gain up to 75 additional horsepower, while 1999-03 models could gain up to an extra 125 horsepower. (Ford did not make any 1998 model year Power Stroke trucks.) This chip plugs into the ECM of your 1994-2003 Ford Power Stroke Diesel’s engine computer allowing you to choose any of four engine tunes on-the-fly. One switch position provides unmodified engine tuning, while the 6th gives a fast idle. Bully Dog’s 6 Position 4 Bank Chips run the lowest exhaust gas temperatures in the industry, typically running 50 to 100 degrees cooler then competitive products.

For quicker, firmer shifts, the chip will enhance the transmission line pressures on all trucks with automatic transmissions. This is ideal for all towing situations and enhances transmission life. The valet setting returns the tune to stock and adds a 70 mph speed governor. Use the 6th position fast idle for cold-weather warm-ups, jump-starting other vehicles, and boosting engine-powered welders.

Installs in an hour or so, may require routing switch wire through firewall. Simply remove the ECM from the vehicle, plug in the 6 Position 4 Bank Chip, plug in the wire from the switch, and reinstall the ECM. The switch wire routing requires removing a small kick panel from the interior. Install the switch in a convenient place on the dash for accessibility, or discreetly hidden out of sight. (Switch installation requires drilling).

Bully Dog was formed in 1998 in Aberdeen, Idaho. The founders of Bully Dog – Michael, Phillip, and Daryl Klassen - were heavily influenced by their father Harold's interest in improving vehicle performance. Several years prior to the company's inception, Harold had experimented with increasing performance on his diesel farm tractor by injecting propane into the engine's combustion chamber. In 1998, Bully Dog's owners took this concept and developed and patented a safe and effective propane injection system to enhance diesel engine performance. These systems were first sold out of their farm shop, but as demand increased, they moved the company to another location and officially organized Bully Dog. Bully Dog's mission was now to be recognized as the leader in the diesel performance industry. With the introduction of electronic components and software to improve performance, they began to research new types of products like intake and exhaust systems to complement their electronic components. In 2005, the company expanded its range of products to include performance products for gasoline-powered vehicles. Bully Dog is now able to offer a complete performance package.

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

BULLY DOG® - 6 Position 4-Bank Chip
Bully Dog® - 6 Position 4-Bank Chip
Average Rating: 4.5 of 5
4.5 of 5
2001 Ford F-250 / Posted by (Cave Creak, AZ) /

Installed easy, alot more power and notice mpg up when I keep my foot out of it! This way better than stock

Was this review helpful for you? Yes8   people found this review helpful.
Buy This Product
BULLY DOG® - 6 Position 4-Bank ChipBully Dog® - 6 Position 4-Bank Chip    $63.97 - $457.07
4.51 reviews
Add To Cart