Power Flow Systems, Inc.

Can I get an FAA Field Approval for my aircraft?

Power Flow Systems does not do field approvals at our facility. Working with their A&P/IA's, several Customers have obtained field approvals to install our system on airframes for which we do not have STC approval. Please contact us if you have further questions.

What type of performance gains can I expect?

A properly designed Tuned Exhaust System typically increases the output of an aircraft engine by 10 to 20 HP. The benefits of this increased horsepower will vary by aircraft, engine, and propeller type (fixed-pitch or constant speed). Please go to the aircraft product page corresponding to your aircraft to see the performance benefits you can realistically expect from a Power Flow System.

Will it increase my RPM?

Yes, on a fixed pitch aircraft the PFS exhaust will increase your available RPM for Static (ground run), takeoff, climb and cruise. The typical range is an increase of from 30 to 130 RPM. The average fixed pitch aircraft sees an increase of 60-70 RPM.On a constant speed prop, the PFS exhaust will not increase your available RPM. If you set 2500 RPM with your prop control, the engine will regulate at 2500 RPM.

What type of fuel savings should I expect?

When leaned correctly, a Power Flow equipped engine is able to reduce its fuel consumption by up to 2.5 gallons per hour. If you fly faster or climb faster than before, you may burn more fuel. With the Power Flow you can choose to fly at the same speeds but will find that it requires less throttle to do so, therefore saving fuel.

Will I get an increase in climb or cruise performance?

The types and amount of improvement that you will see depend on the aircraft and the type of propeller configuration (fixed pitch or constant speed). Please refer to the individual product pages for the specific ranges for each individual aircraft. Below is a general explanation between constant speed and fixed pitch improvements.