Frequently Asked Questions

General
Does installing the Liberator Exhaust System void my vehicle or engine warranty?
Where is the Liberator Exhaust System made?
Is the Liberator Exhaust System legal?
Is the Liberator Exhaust System guaranteed?
How do I purchase a Liberator Exhaust System?

Performance & Operation
Does the Liberator Exhaust System increase my fuel economy?
How does the Liberator Exhaust System work?
Does installing the Liberator Exhaust System void my vehicle or engine warranty?
No, adding a Liberator Exhaust System will not void your vehicle or engine warranty.
What about other products that claim to get me better mileage?
Does the Liberator Exhaust System only save fuel, or does it have other features?
What engine horsepower can the Liberator Exhaust System handle?
Will the Liberator Exhaust System rust or corrode?

General

Does installing the Liberator Exhaust System void my vehicle or engine warranty?
No, adding a Liberator Exhaust System will not void your vehicle or engine warranty.

Where is the Liberator Exhaust System made?
The Liberator Exhaust System is manufactured in Fraser, Michigan, part of metropolitan Detroit and home of America’s automotive industry experts. Everything – and we mean everything – we purchase that becomes part of your Liberator Exhaust System is American-made and American-produced. If you are passing through Detroit, give us a call and come by and visit us. We are proud to say our products are “Made in America”!

Is the Liberator Exhaust System legal?
Yes, the Liberator Exhaust System is completely legal in all 50 states and Canada. We meet all applicable federal requirements, and we exceed the stringent California noise standards.

Is the Liberator Exhaust System guaranteed?
Yes. We offer a 9 year/1,500,000 mile warranty for both vertical and horizontal installations. Furthermore, we offer a 90-day money back guarantee on our product if you are not satisfied with it. You can download our Warranty and Guarantee from the “Support” page of this website.

How do I purchase a Liberator Exhaust System?
You can order a Liberator Exhaust System directly from this website. Go the homepage and click on the “Order” button. You can also contact us directly toll-free at 1-866-400-0075 (or 1-248-865-2003) so we can connect you with big, annual savings that put thousands of dollars in your pocket. You may also run into one of our authorized Sales Representatives on the road that can get a Liberator Exhaust System into your hands.

If anyone offers you a Liberator Exhaust System, you can contact us through our website and we can verify whether or not you are dealing with one of our authorized Sales Representatives. They are the only ones who can officially sell the Liberator Exhaust System. Avoid counterfeits or copies, Internet auction sites, or similar parties claiming to sell the real Liberator Exhaust System.

Performance & Operation

Does the Liberator Exhaust System increase my fuel economy?
Yes. If installed correctly on a Class 7 or Class 8 power unit, the Liberator Exhaust System will provide you with improved fuel economy, either increased MPG or GPH. Actual on-road trucker experience, an SAE II test, independent laboratory and university test programs, validate that the Liberator Exhaust System improves mileage from 5% up to 10%.

How does the Liberator Exhaust System work?
The Liberator Exhaust System uses wave-movement technology; a technology that has been granted United States and foreign patents. Through this free-flow and sound-canceling technology, the Liberator Exhaust System simultaneously reduces exhaust noise while nearly eliminating backpressure to the engine. Relieving back-pressure lets the engine operate more efficiently, breathe better, and last longer.

What about other products that claim to get me better mileage?
Lots of products make all sorts of claims. Our engineers have purchased many of them, disassembled them, and investigated their construction and components. We are prohibited from commenting further on specific competitors’ products here on our website, but at a recent truck equipment show, our competitors sure took a lot of photos of our product and copied all our literature!

Click on the “Support” section of this website to download the Independent Test Results, which gives you specific test results from actual power units. The Oakland University’s Truck Technology Research Center conducted an eight-week program in coordination with DaimlerChrysler to thoroughly test the Liberator Exhaust System and its performance. As the test results show, the Liberator Exhaust System resulted in an average mileage improvement of 8.9%, with specific power units improving from 5.4% to 12.1%. That’s the equivalent of getting an 8.9% discount on every gallon of fuel you buy all year long!

Does the Liberator Exhaust System only save fuel, or does it have other features?
Although the Liberator Exhaust System’s primary selling feature is its ability to help you improve fuel economy, it also has other positive engine effects: less wear, longer life, more turbo boost, less turbo lag, less downshifting and greater power.

Furthermore, the Liberator Exhaust System significantly lowers exhaust noise, both in cab and outside, improving operator comfort and reducing fatigue. Download the Independent Test Results document in the “Support” section of this website to receive the data on noise reduction. The Liberator Exhaust System exceeds California and U.S. federal standards.

What engine horsepower can the Liberator Exhaust System handle?
Due to the unique free-flow design of the Liberator Exhaust System, the unit is not constrained by the horsepower of your application. The important consideration is exhaust pipe diameter. The Liberator Exhaust System currently is available with 5-inch diameter inlet and outlet tubes, which works with most Class 7 and 8 applications. If you have a need for a different inlet or outlet pipe diameter, please contact us toll-free at 1-866-400-0075 (or 1-248-865-2003).

Will the Liberator Exhaust System rust or corrode?
The Liberator Exhaust System is manufactured of 304 CRES – 100% stainless steel inside and out, so it resists rust, road chemicals and grime, fuel spills and spray, and anything nature can throw at it. Because the Liberator Exhaust System is 100% stainless steel, there is no chrome plating to scratch or peel off and no aluminized coatings to wear off. Scratches won’t affect the corrosion resistance and the polished surface provides a chrome-like finish.

Installation

Is the Liberator Exhaust System difficult to install?
The Liberator Exhaust System is installed like any other muffler. You can replace your stock or aftermarket muffler with the Liberator Exhaust System with the usual tools. An instructional manual is provided with each unit or you can download the manual from our “Support” section on this website. If you have questions or run into any problems during the installation you can always contact our support help line by phone (1(888)400-0075).

How long does it take to install a Liberator Exhaust System?
In most applications, it takes approximately 40 minutes to install a Liberator Exhaust System – no different than removing and replacing your current muffler.

How many people are needed to install a Liberator Exhaust System?
For safety reasons, we recommend two people to assist in the installation of a Liberator Exhaust System. The unit is 53 inches long and weighs 57 pounds.

Will I need to modify anything to install my Liberator Exhaust System?
In most applications, installation of the Liberator Exhaust System is straightforward. It is no more complicated than replacing your current muffler. In some applications, minor modifications to the mounting hardware on your vehicle may be required.

Can the Liberator Exhaust System be installed in buses?
In most applications, yes. Engine and exhaust installations are more constrained in typical rear-drive buses than conventional trucks and tractor-trailer rigs. Therefore, it is always best to compare the Liberator Exhaust System’s product dimensions with your available mounting space. You can download the product dimensions from the “Support” page of this website. The Liberator Exhaust System currently has a 5-inch diameter inlet and outlet pipe. If you need a different size, please contact us toll-free at 1-866-400-0075 (or 1-248-865-2003).

Can the Liberator Exhaust System be installed in off-road equipment?
In most applications, yes. The variety of off-road equipment is very extensive so it is impossible for us to know about every application. Therefore, it is always best to compare the Liberator Exhaust System’s product dimensions with your available mounting space. You can download the product dimensions from the “Support” page of this website. The Liberator Exhaust System currently has a 5-inch diameter inlet and outlet pipe. If you need a different size, please contact us toll-free at 1-866-400-0075 (or 1-248-865-2003).

Can the Liberator Exhaust System be installed in marine (boat) applications?
The Liberator Exhaust System is made of 304 stainless steel, so it is suitable for marine environments. In order to properly determine whether the Liberator Exhaust System will fit in your application, please compare the Liberator Exhaust System’s product dimensions with your available mounting space. You can download the product dimensions from the “Support” page of this website. The Liberator Exhaust System currently has a 5-inch diameter inlet and outlet pipe. If you need a different size, please contact us toll-free at 1-866-400-0075 (or 1-248-865-2003).

Can the Liberator Exhaust System be installed in stationary generators?
In most applications, yes. Stationary generator installation depends on the placement of the exhaust piping and the enclosure, if any, around the diesel engine. The variety of gensets is very extensive so it is impossible for us to know about every application. Therefore, it is always best to compare the Liberator Exhaust System’s product dimensions with your available mounting space. You can download the product dimensions from the “Support” page of this website. The Liberator Exhaust System currently has a 5-inch diameter inlet and outlet pipe. If you need a different size, please contact us toll-free at 1-866-400-0075 (or 1-248-865-2003).

Can the Liberator Exhaust System be installed vertically or horizontally?
Yes, the Liberator Exhaust System works in either a vertical or horizontal position.