About Us

Power Flow Systems, Inc. was founded in 1997 by Robin Thomas. Mr. Thomas is also the president of Laminar Flow Systems, Inc. which developed and manufactures speed modifications for Piper PA 28, 32 & 34 aircraft.

Power Flow's first FAA STC approval was in March of 1999 for a Tuned Exhaust System for the Cessna 172 with the Lycoming O-320 engine. This approval was for the very distinctive 'external' tailpipe design. Dynamometer testing at LYCON in Visalia, CA, showed that this design allowed the engine to produce 23.75 more horsepower than the factory equipped exhaust! Additional benefits include more torque, shorter takeoff distance, higher rates of climb and faster cruise speeds or a fuel savings at current speeds.

In the intervening 20+ years, Power Flow has expanded its list of STC'd kits to include several other popular Lycoming O-320, O-360, I/O-360, & I/O-390 powered aircraft. This list includes the 180 HP Aviat Husky A-1, A-1A, A-1B, & A-1C models, fixed gear Cessna -177, -177A, & -177B airframes, the C-177RG, the Diamond DA40, the Grumman AA5 series, Piper PA28's, Mooney 180 HP (B, C, D, G) & 200 HP (E, F, J) models, Beechcraft 19/23 series, Robinson's popular R-22, Mariner, HP, Alpha, & Beta helicopters powered by the Lycoming O-320, and Glastar/Sportsman experimental aircraft.

Power Flow exhaust systems are made of all stainless steel components and feature slip joints for improved durability. The exhaust system is designed to require no modifications to the engine, though some aircraft models may require minor changes to the cowl. The exhaust system generally installs in less than one day.

Installing a Power Flow exhaust is similar to installing a bigger engine but at a fraction of the cost, with faster installation and without the increased fuel burn. All exhausts have a 60 day, money back guarantee and are warranted for 1 year or 500 tach hours, whichever occurs first.

In early 2005, Power Flow obtained FAA approval for a new 'short-stack' exhaust. This popular option offers similar benefits but with less “distinctive” looks.

With our recent acquisition of Leading Edge Exhaust Systems (formerly of Anchorage, Alaska) we are building on our proud tradition of excellent performance and outstanding Customer Service by expanding our product offerings to include the larger six cylinder Continental engines as used on the Cessna 180 through 185 models, the 205 through 210 airframes, as well as Piper PA18 and PA20/22 series aircraft.

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