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Complete replacement of your Piper PA28's exhaust system. Replaces part number: 99482-00.
FAA approved by STC and for all PA28-140 aircraft with Lycoming O-320 engines.
FAA approved by STC and for PA28-140 converted to Lycoming O-360 engines.
FAA approved by STC for all PA28-150 & -160 (serial number 1761 or lower) airframes with the Lycoming O-320 engine with the stock exhaust muffler exiting the copilot side.
FAA approved by STC for early model (below s/n 1761) PA28 -150, -160, and -180 aircraft with Lycoming O-360 engines with the stock exhaust muffler exiting the copilot side.
Bolt on Horsepower / A complete exhaust for your Piper!
For 65 years and counting, Piper’s ubiquitous Cherokee has been a favorite of pilots worldwide. Safe, stable, and economical to own and fly, for many of us it is a “near perfect” personal airplane.
As happy as almost all owners are with their Cherokees though, many of them will admit to being a little less thrilled with the aircraft’s somewhat anemic performance during the critical take-off and climb-out regimes.
That is precisely where we can help:
Bolt-on a Power Flow Tuned Exhaust System and give your Cherokee that shot of extra “oomph” that you know it needs. See it, Hear it, Feel it, Try it - we give you a full 60 Day Money Back Guarantee. This boost of power will have you flying higher, faster, and on less fuel in no time, with only one side effect: a chronic & infectious ear-to-ear grin.
The Power Flow Tuned Exhaust System is not just another replacement muffler - it is a vast improvement over the stock Piper exhaust system. Our system is currently installed and flying on more than 1,100 Cherokees worldwide making it one of the most thoroughly tested and widely accepted performance upgrades for Piper’s classic design.
The concept is simple, out with the old exhaust gases, in with the new fuel-air charge. By more effectively emptying each cylinder of spent exhaust gases, Power Flow gives your Cherokee a number of significant benefits:
You will immediately notice an increase in RPM (30 - 130 more).
On take-off, your Cherokee will break ground after a ground roll that is 100’ – 300’ shorter.
See a 30 - 50% improvement in rate of climb - Yes, we said and we MEAN 30 - 50%!
Want to save fuel? You can use less throttle to fly at your current cruise speeds and save up to 2.2 GPH.
For more power, use the extra RPM (100 RPM yields approximately five extra knots of airspeed for a slightly (about ½ GPH) higher fuel burn.
CHT’s are reduced by 10 F – 20 F with less difference between cylinders.
The service ceiling is increased by 2,000 – 5,000 feet, with a corresponding improvement in performance during high density altitude operations.
The Power Flow is a versatile, quality constructed, complete replacement of the entire exhaust system for your PA28. A new Cabin and Carburetor Heat shroud (utilizing your current SCAT tube hook-ups) is included. The entire system is constructed from 321 stainless steel and includes minimal structural welds in the cabin heat section for improved safety.
All necessary parts are included for easy installation, usually requiring just 5 - 7 hours. The system can be installed by one of our Authorized Dealers, by your local A&P, or you can fly to us for the installation. Fly in with a standard Piper Cherokee, fly out (usually the same day) tuned for maximum performance and efficiency.
For Lead Times and Discounts see table below.
AOG Rush? Need your Power Flow ASAP? Contact us for the best possible delivery date (surcharge will apply)
Standard Lead time averages 4 - 6 weeks
Short Lead Time Discount (have time & save $$)
Long Lead Time Discount (8 - 12 week Lead)
* Exhaust Kits have a variable lead time, dependent upon our Sales offer and manufacturing capacity - Please refer to the chart below for current lead times and any available discounts. If you need an exhaust immediately, please call or indicate AOG in the “Notes” section of the online order. All other in stock items normally ship within 2 business days of order receipt. 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.
Polished Finish 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 discoloration 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 Cherokee's appearance and would rather spend your time flying than polishing, the ceramic is a nice feature to have.
Ceramic Short Stack Tailpipe
Polished Short Stack Tailpipe
Classic Ceramic Tailpipe
Classic Polished Tailpipe
Short Stack Tailpipe
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 of 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 aircraft. 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.
Still not sure if a Power Flow is right for you and your airplane? For complete peace of mind, check out our:
Warranty & Guarantee
Who 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:
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 and you can reuse it up to 25 times or 2,500 flight hours. Since the Challenger system significantly improves the intake side of your Cherokee’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.
Piper PA-28 PIREPS
"Well everyone, I finally did it. Flew down to Sun n Fun from Detroit in my 140 and stopped by in Daytona to get the Powerflow system installed on the way home. WORTH EVERY PENNY. MUCH better climb (added more than 300' minute easily). Higher speed by a few knots. Added 100+ RPM on the tach. Much shorter takeoff roll. Lower fuel consumption by > 1 gallon per hour. 140 performed flawlessly and the PowerFlow made the ride home a pleasure. Thanks Robin!" Jeffrey Dalton - Waterford, MI PA28-140 (O-320)
"I've had the Power Flow on my plane for about 3 months (approx. 50 hours) now, and I'm happy to say it is all that it's advertised to be and more. I've been very impressed with the takeoff and climb performance, even with my high-time engine. I'm seeing about 125 static rpm increase. On a 75 (F) degree day, fuel to the tabs (36 gal), I get a 1000ft/min climb-out at 85 MPH from our airport (1012 ft msl), where I used to get 600-700ft/min . Takeoff roll is noticeably shorter. My engine runs cooler, and the fuel burn is down about 0.8 - 0.9 gph. Thanks for a great product." Joseph Buckley - Mora, MN PA28-140 (O-320)
"It's official! After the first 5.5 hours of dual in our 68' Cherokee 140 I am a believer. The PowerFlow exhaust is amazing. My instructor flies his own 64' Cherokee 140/160 conversion and the first words out of his mouth were "WOW this thing climbs!" The 750fpm on a 75F degree day at 2600' density altitude was a shock. We have been flying at 1950 to 2000 pounds with full fuel and my lard butt plus the CFI. The engine is at 1900 hours since new so this is no small feat. The other comment from the CFI is how much quieter the cabin is and how cool the cockpit stays with the muffler removed from the firewall." Andy Jones - Dublin, OH PA28-140 (O-320)
"The Power Flow added an additional 125+ RPM on T/O, which translates into significantly more power.It accelerates faster (eagerly) and climbs out at 150 FPM better than before and cruises about 15 MPH faster. The CHTs dropped a whopping 50 to 100 degrees. The gain in speed may be subjective, but this bird gained at least 15 MPH. Since this installation, I've had zero oil on the belly. I don't have an air/oil seperator - now I don't need one. I'm a skeptic, but the Power Flow system watered my eyes with performance. A great mod!" Samuel Wilcox - APO, Panama PA28-140 (O-320)
"Before I was getting 200-400 FPM at 5,000 foot airport elevation, after was getting 400-600 FPM." Robert D. Stager - Kanab, UT PA28-160 (0-320)
"I stopped off in Daytona to have Vic at Power Flow do a flawless installation of the latest tuned-exhaust system for the 140... Wow! The improvement in performance is nothing short of amazing. Climb rate increased close to 300 fpm, top speed increased five knots and fuel consumption went down at least one gph. The real result for my business? Rentals of my aircraft have more than doubled since May, and my customers couldn't be happier. It was well worth the $4k investments in modification to improve the performance of 56041." Text published in PIPER FLYER, October 2004 Issue." Jeff Dalton - MI PA28-140 (O-320 160 HP)
"Climb out much better with the Power Flow exhaust." John Rough - Wayland, MI PA28-140 (O-320)
“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
“…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.
“Power Flow’s tuned exhaust for the 140 packs that extra power.” AOPA Pilot, February 2002.
“Overall, the Power Flow tuned exhaust delivers what the company promises. Though each installation is different, Power Flow is proving that its numbers are honest.” AOPA Pilot, February 2002.
“A little boost in climb and cruise goes a long way.” Plane & Pilot, June 2004
“…the 140 also posted measurable improvement with the new exhaust system.” AOPA Pilot, February 2002.