Magazine Reviews on the Power Flow C-172 Tuned Exhaust System:

  • "Although it's not free, Power Flow has created the closest thing to free horsepower that we've seen." “…the airplane could reach redline rpm in cruise, something this Skyhawk was unable to do before.” AOPA Pilot, January 2000

  • “A rate-of-climb increase of about 20 percent is remarkable – not to mention the safety factor increase when leaving high-altitude airports or climbing through cloud layers.” Private Pilot Magazine, December 2000.

  • “This is a quantum leap in climb performance.” Cessna Pilots Association Magazine, August 1999

  • “I’m not a test pilot but… even I could tell there was a difference. It was that obvious.” “…the difference was obvious by comparing our height as we flew over the windsock during the two takeoffs.” Flying Magazine, August 1999

  • “In the aircraft industry, you see many “mods” claiming incredible changes to performance. It is refreshing to see one that actually lives up to its performance claims.” Cessna Owner Magazine, September 2002.

  • “The engine gets a more complete fuel burn. The effect in the cockpit is that it will take less throttle to get the same RPM” Aircraft Maintenance Technology Magazine, March 2005

Posted 03/30/16: Cessna 172 Customer Testimonial from 2016 Northwest Aviation Convention in Puyallup, WA:
Posted 12/04/15: Cessna 172 Customer Feedback:

Customer Reviews on the Power Flow C-172 Tuned Exhaust System:

  • Overall appearance was very good and installation done in approximately 1.5 hours (company claims 3 to 5 hours)..

  • Paul Roberts - Stuart, FL C-172P (O-360 AirPlains conversion)

  • They're not getting my exhaust system back!! A friend of mine installed a PFS system on his 150hp C-172 a week before he assisted installing mine, and wasn't sure he likes the system. My 180hp C-172M lifts off in 75' to 100' less runway, climbs 2-300fpm faster, cruises 4-5mph faster, and now will redline rpm below about 5000' in level cruise. I'm not convinced it's quieter, though it maybe, but the aircraft is considerably smoother now. I used to get a real "buzz" when I leaned my head so that the head phones touched the window. Now it's more like a "hum." Early indications are that fuel consumption has decreased from 9-9.2gph to 7.6. I haven't flown it enough to confirm the 7.6gph, but that's what I got on the first tank after installation.

  • Jim Hordyk - Fort Bragg, CA C-172M (O-360) Airplaines conversion

  • Shorter take-off, improved rate of climb, cylinder head temperatures lower, exhaust gas temperatures lower, MORE HORSEPOWER. AWESOME!! Roger D. Hrdlicka - Edgewood, WA C-172M (O-320)

  • Very satisfied so far. I guess I was expecting a little more increase, but still notice a definite increase in take off performance. Initial RPM increase on take off about 50. Able to back off power sooner, much better climb performance. James Schoenmann - Jackman, ME C172N (O-360 conversion)