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Welcome to the new Power Flow Systems website! Please let us know if you have any issues. email web@powerflowsystems.com. We hope you like it!
Performance tuned exhaust FAA approved by STC and applicable to: Aviat Husky Models A1, A1A, A1B, A1C-180 with Lycoming O-360 engines.
Replaces part number(s): 35650-002, 81447, 35651-004, 81447AWL, 81446, 35651-001, 81446AWL, 81449, 3651-005, 81449AWL 81448, 35651-002, 81448AWL, 81444, 65650-003.
Bolt on Horsepower. A complete exhaust for your Husky!
Ready for MORE of what you got your Husky for? In close cooperation with McCreery Aviation of McAllen, TX, (a well known and highly respected Aviat Dealer), Power Flow Systems, Inc. developed a new Tuned Exhaust System for the Aviat Husky. This exhaust system is FAA approved by STC (Supplemental Type Certificate) for all A1, A1A, A1B and A1C-180 models powered by Lycoming O-360 engines.
In recognition of the superior performance offered by our system, Aviat Aircraft now offers our Tuned Exhaust System as a factory option on all new production Huskies with the Lycoming O-360 engine.
Current Husky flying customers have confirmed our system’s performance improvements:
Shortened take-off roll (by as much as 367 feet)
Improved Climb performance (8% - 15% depending on altitude)
Increased Service Ceiling (by 2,000 – 5,000 feet)
Faster Cruise Speed (+ 5 mph) for a slightly higher (+.5 gph) fuel burn, OR:
Reduced Fuel Burn (.4 – 1.0 gph) at your current cruise speed
Vastly improved (by more than 100º F!) Cabin Heat Output
So, whether you like to use your “Dawg” for exploring some of those awe-inspiring back-country air strips, or just touring the country from a lofty (but not too lofty) perspective, Power Flow’s innovative Tuned Exhaust System will give you more of the breathtaking performance for which the Husky is so well-known.
As a matter of fact, several of our customers have observed that our system puts the performance of their 180HP Huskies squarely on a par with Aviat’s 200HP versions – at a very small fraction of the price differential between those two aircraft.
And, of course, our industry leading 60 day money back guarantee means that if for some reason the performance benefits listed above fail to materialize on your Husky, you can return the system to us within 60 days of its installation for a full refund of your purchase price.
As noted above, the cabin heat output of Power Flow equipped Huskies is over 100ºF hotter than the stock cabin heat, so existing aircraft need to install Aviat's optional metal heater vents or watch in rapt fascination as your plastic vents are reduced to molten puddles before your very eyes (Trust us – we’ve done it!).
Husky aircraft not equipped with Aviat’s optional Vernier Mixture control should upgrade to the Vernier Mixture control. The Vernier control operates like the propeller pitch control for precise adjustment of the mixture. This allows you to take full advantage of the improvements in performance and fuel economy made possible by the Power Flow System.
We also strongly recommend the installation of the Challenger Air Filter system to further improve the performance of your Husky. Utilizing K&N’s high performance, reusable filtration media, the Challenger offers a very cost-effective improvement to the induction side of the engine. It is a great complement to the improvement in the exhaust side of the engine provided by Power Flow.
As a convenience, you can order the heater vents, mixture control and Challenger Air Filter package from us when you order your new Power Flow Tuned Exhaust to make installation easier and save on shipping costs.
For current price, lead times, and available discounts see table below
AOG / Rush - Need your Power Flow ASAP? Contact Us
Standard Lead time average 4 weeks
Or - Trade Time for $avings:
Short Lead Time Discount / Ships in 4 - 6 weeks
Long Lead Time Discount / Ships in 6 - 8 weeks
* Exhaust Kits have a variable lead time, dependent upon our Sales offer and manufacturing capacity - Please refer to the chart above for current lead times and available discounts. If you need an exhaust immediately, please call or indicate AOG in the “Notes” section of the online order. Your credit card will not be charged until the order and shipping cost are verified by our Sales Department and confirmed with you.
** Prices are for US and Canadian registered aircraft only. International customers may place an order online and will be contacted by Power Flow Systems, Inc. or a local authorized reseller regarding final pricing.
We ship each new Tuned Exhaust with everything needed to complete the installation on your Husky (right down to the cotter pins) included in the box. The available options are described below:
Polished or Ceramic Coated Tailpipe?
The Ceramic Coated tailpipe is a cosmetic enhancement that hides the heat induced discoloration that is characteristic of stainless steel (think of the "bluing" you see on the muffler of a motorcycle).
This patina has absolutely no effect on performance or reliability, but the ceramic coating covers it up permanently. Otherwise, the polished tailpipe begins to discolor after a few hours of flying time. It can be re-polished anytime, but if you are proud of your Husky's appearance and would rather spend your time flying than polishing, the ceramic is a nice feature to have.
Polished Tailpipe
Ceramic Tailpipe
Polished Tailpipe Top Ceramic Tailpipe Bottom.
A couple of other important pieces of information:
#1) We strongly recommend that the aircraft's propeller be dynamically balanced to within 0.2 ips (inches per second) upon installation of the Power Flow System and every two to four years thereafter. If the propeller is dynamically balanced within 25 flight hours (before or after) the installation of the Power Flow System and you furnish PFS with copies of the logbook entries confirming this, PFS will extend the warranty on the Tuned Exhaust System from 12 months to 24 months or 500 Flight Hours (whichever occurs first).
Doing so every 2 - 4 years thereafter will dramatically improve the useful life and the reliability of every component that is bolted to the engine, including the Power Flow System.
#2) The Power Flow System has no service life limit. It is designed and built to last several thousand flight hours and will quite likely be the last exhaust system you need to buy for your Husky. As with any high-performance system however, it must be maintained properly. Every 500 flight hours or annually (whichever comes first) the four slip joints on the system must be cleaned and lubricated with high temperature anti-seize compound.
Most customers have this maintenance performed during the aircraft's annual inspection which adds about 2 hours of labor to the inspection. We have had several of our Tuned Exhaust Systems rack up over 4,000 flight hours of trouble-free performance (7,000+ flight hours is the current record in a commercial operation) as long as this maintenance is performed as required.
Ready to place an order directly through our online store? Click Here !
Need more information? Click Here to Contact Us
Power Flow Exhaust Husky Product Brochure.pdfWarranty & Guarantee
IWho wants to gamble with their hard-earned dollars? You don’t want to and Power Flow doesn’t want you to, either. That’s why we offer three layers of protection with each system we ship:
100% customer satisfaction guarantee: If within 60 days from the date of the first flight after installation you are dissatisfied for any reason, you can return the system to Power Flow Systems and you will be entitled to a full refund of the purchase price of the system (exclusive of shipping charges and labor) once the system has been received and inspected by Power Flow Systems. Inspection will take place within five (5) days from the return of the system, and an adjustment to the refund amount will be made for any parts missing or damaged. If the original payment was made on a credit card, it will be refunded to the same credit card. If payment was made by check, a company check will be issued.
And finally: in cooperation with our network of Preferred Dealers, we are pleased to offer our:
We know that it works, more than 7,300 Satisfied Customers worldwide know that it works, and your local Power Flow Preferred Dealer knows that it works . . .
But, what happens if it doesn’t work on YOUR airplane?
As the name implies, this program lets you buy a Power Flow Tuned Exhaust System for your airplane through one of our Preferred Dealers, have them install it for you, and go fly with it for 60 days, absolutely risk free!
If it works like we know it will, Great! Welcome to the world of higher performance!
If the system doesn’t live up to YOUR expectations, or even if it does but you just don’t like all that extra horsepower, simply fly your airplane back to the Preferred Dealer (who originally installed your Power Flow). That Preferred Dealer will:
Remove the Power Flow System from your aircraft,
Reinstall your original exhaust (as long as it was airworthy when removed) at No Charge,
Refund the purchase price and installation charges you paid to have the system installed, &
Return the system to us at the Dealer's expense.
Power Flow will even refund your outbound shipping charges meaning that the only thing you stand to lose is your skepticism!
Challenger Air Filter
The Challenger air filter replaces the disposable foam filter media found on most aircraft with K&N's high efficiency reusable filter media which provides up to three times more air flow to the intake manifold of the engine. Our own testing has repeatedly confirmed Challenger's published data:
A boost in manifold pressure (up to ½”)
An increase of 1 - 2 knots in airspeed
An increase in available power on takeoff.
As mentioned above, the filter media itself is reusable. You just clean it and recharge it (coat it with oil so the dust sticks to it) once a year during annual. This can be done up to 25 times or 2,500 flight hours. Since the Challenger system significantly improves the intake side of your Husky's engine at a very reasonable cost, we consider it to be the perfect complement to our Tuned Exhaust System which significantly improves the exhaust side.
PIREPS & Reviews
Don't just take our word for it - listen to what just some of our happy Power Flow customers have to say about the Power Flow tuned exhaust system on their aircraft :
McCreery reviews the Power Flow System for the 180HP Husky
"I had the opportunity to go to Florida and test fly the Power Flow system for the Husky and wanted to share my seat-of-the-pants, barely scientific observations with you. I’ll leave it to the Power Flow guys to give you the data
The day I got to Daytona was a little uncharacteristic of Florida weather- although the temperatures were nominal the winds were about 10 gusting to 20 out of the south, right down the departure runway. This presented some difficulties in measuring takeoff distance but once in-flight, didn’t much affect the aircraft.
They are using McCreery’s 2008 A-1C-180 with an 80” Hartzell prop and 8.50 tires.
With full fuel and me at 240 lb, the airplane was off the ground before I rolled through the numbers, no doubt helped by the breeze on the nose but there was definitely an increase in power and acceleration from the Power Flow system. Fuel flow on takeoff as shown on the VM1000 was higher than I’d ever seen with a stock Husky before (17+ gph), also indicating more power being created.
Climb-out was somewhat limited by a 2500’ ceiling over the mainland, but while climbing over the runway, again I could tell there was more power than the stock Husky at work.
My SOP experience reminded me of the climb performance of an early (light) A-1 as compared to the A-1C. I did not have a “200HP” experience I had hoped for but there was definitely more kick with takeoff and climb power applied.
EGT spreads were equivalent to what I was used to seeing, although I believe that peak EGT was higher due to better exhaust gas scavenging. I’ve been using TomD’s “full throttle less ½” for so long it’s automatic and the CHT’s were about the same as non-Power Flow for the climb-out.
Once off-shore where the clouds finally opened up, I did a “time-to-climb” from 12,000 to 14,000 feet that gave me a baseline for comparison to another 2008 A-1C-180 that I have here in McAllen, TX. The PF airplane beat the stock airplane by 1 minute in the climb with very similar OAT’s. The differences between the airplanes were that the stock airplane had an MT and 26” tires and the PF airplane has 8.50’s and the aforementioned 80” Hartzell.
When the climb test was over, it was time to go back to DAB against those same headwinds. Once leveled out at 2200’, I found the PF airplane at 75% power demanded about 1 gph more than the stock Husky system for 75 degrees rich of peak as I normally run. There was definitely more speed but I’ll let Jim describe the measured differences. Indicated airspeed was in the yellow arc.
Finally, there was the increase in heater output temperature that so many have lusted after. I had the opportunity to take a new Husky from Afton to northern Maine a couple of weeks ago and spent a lot of time at altitudes where the OAT was 0-10F. I now better understand why you cold-weather Husky owners wish for more heat! "
Jim Taylor, McCreery Aviation.
General Magazine Reviews on the Power Flow Tuned Exhaust
General Magazine Reviews on the Power Flow Tuned Exhaust
“…Power Flow systems offer among the best bang for buck of any mods we’ve reviewed.” – The Aviation Consumer – Feb. 2009
“There’s very little available on the aftermarket these days providing the same return rate on investment.” – The Aviation Consumer – Feb. 2009
“…we are convinced they have a well engineered product and they have made reasonable performance claims.” – Light Plane Maintenance – Sept. 2008
“…the company’s money back guarantee almost makes it a no-brainer to give it a try.” – The Aviation Consumer – Feb. 2009
“I’m not a test pilot but… even I could tell there was a difference. It was that obvious.” Flying Magazine, August 1999
"Although it’s not free, Power Flow has created the closest thing to free horsepower that we’ve seen.” 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 (click to read)
“…boosts the Lycoming O-320’s output by at least 20HP, while simultaneously reducing fuel flow and lowering CHT’s. Geez, what a deal.” The Aviation Consumer, May 1999
“At the conclusion of the flights, there was no questions that the PFS had improved both climb and cruise performance.” Plane & Pilot, December 2006. (M20 200hp)
“Upon opening the large boxes, I was immediately impressed.” Cessna Owner Magazine, September 2002.
“This is a quantum leap in climb performance.” Cessna Pilots Association 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
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