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"I have
installed K & N filters in 4 motorcycles, 2 trucks and now in
my twin engine airplane. Thanks for developing such a fine
product."
- W.T. Straughan from Duback, LA
"I have
recently put your Challenger filters on my Cessna 172. It is a
wonderful filter and I'm recommending them to everyone."
- Pat Dincognito from Union City,
California
Climb fast and save
gas! -
"After I installed a Challenger air filter on my Cessna 172
I immediately noticed what I call a power boost in full throttle
climbs. On my first flight with a Challenger air filter, I flew
IFR, and on climb to 5,000 feet, the power boost was most
noticeable from 3000 feet on up. In full throttle climbs the
engine seems to be maintaining higher RPMs
and it seems that I am getting a noticeably greater rate of
climb. I am continuing to experience these benefits after 50
hours with the new filter. I have flown my plane 250 to 300 hours
per year on my daily commute for over 10 years, meaning that if I
notice a change, it is most likely true. I was reluctant to spend
the money on the new filter, but the power increase alone is
noticeable enough to me that I honestly feel that I got my
money's worth. The additional fuel savings as shown below not
only justifies the expense, but at today's fuel cost of $3.80 per
gallon, the Challenger air filter has already paid for itself and
I am saving about $1.75 per hour, $2.24 a day, $11.19 a five day
week, $48.48 per month, (and about $525 per year after deducting
for days off, vacation, etc.). That is significant.
In addition to the change in climb, I have noticed a change in
performance at cruise as well - my engine runs pretty lean at my
most common cruising altitude of 3,500 feet above sea level. I
have a exhaust gas temperature EGT gauge with probes on all four
cylinders, at 2,475 cruise RPM, at 3,500 feet, the mixture
distribution is uneven and any leaning is usually not possible
because one of the cylinders is already at peak EGT. However,
with the new Challenger air filter, the mixture distribution is
slightly more even between the cylinders at cruise and further
leaning is now possible without risk of over-leaning any one
cylinder. I theorize the more even mixture distribution is
attributable to the fact that the intake suction is getting less
resistance from the new air filter."
- David Wills reports to pilots at College Park, Maryland
Glasair III owners happy! -
Brazilian Glasair III owner Martin
reports he is very pleased with the performance of the
Challenger/K&N air filter CPE-1040. He has convinced fellow Glasair III owner Jack Onderstall
from South Africa to buy a filter for his aircraft as well.
"Holy Cow
Batman!
At 12,000 feet...TAS 195
At 11,000 feet... TAS 196
At 10,000 feet... TAS 195
AT 9,000 feet... TAS 194
That was the first time I've earned the mile high pin without
anyone else in the cockpit...HONEST!!!
This filter should be part of every Mooney that leaves your
shop...your customers will notice the improvement as soon as they
level off at ANY cruise altitude."
- Dan, Screamin' Eagle #01
"I bought one of your filter kits for my Mooney because I
have used and still use K&N filters on my performance cars
and I think they do perform as advertised, so when I saw you were
making them for Mooney's, I bought one. Initial test flight
indicated about 1" higher MAP as you said it would and I was
pleased. So far the filter may be the best mod I've installed
thus far."
- Bill Juskhas, Mooney M20F owner
"If you own a Mooney M20J (which has a tuned induction
system) and you do not own the Challenger air filter with K&N
media, then you deserve to fly slower. I fly my Mooney up to
17000 IFR on long trips and usually around 12000 on medium trips.
You can chose
either better fuel economy or faster cruise, which is a no
brainer for the Mooney crowd. Let it run wide open to keep the
induction smooth and take what you get at altitude. My Shadin does not lie and neither does my TAS
indicator. I was so impressed that I bought a K&N air filter
for my van."
- Steve Tuttle
"The bottom line is results, and I obtained a significant
result in my aircraft with the air filter change - no doubt about
it."
- Tom Rosen, S35 Pilot from Woodland, CA
"I got my air filter and I haven't been this happy since I
was 9 at Christmas."
- Steve Tuttle
"Just installed the new Challenger air filter in my Arrow
II. What a difference. Climbing through 3000' at 24" square
no throttle movement. At 700' climb rate at 120 mph past 4000' atill 700' climb 125 mph bumped from
23.0" moved throttle up to 24". At 6000' I had 24"
full throttle still had 700' climb rate at 120mph. Level off at
7500' full throttle at 23.5"!!! Normally this plane should
be around 21" and 24 rpm while leveling off with 600' climb
rate and it wanted to keep going. My Brackett filter would die
out around 3500' with 23". I welcome anyone to use
Challenger Products and see the difference. I am on cloud 9!!!
The plane trued out at 7500' 23.5" at 174 mph and the plane
needs a bath. WOW...that is all I can say."
- Mark Willhite
"It's amazing what a simple things like an air filter can
do. I just installed the K&N filter in my Piper Cherokee -140
per service manual and your STC and found the following:
To preface, I have been a test pilot and have been flying the
-140 for many hours. I say this so that you all know that when I
say I am Vy I really am Vy and not a mile or two. I started with the
tanks at the tabs, and flew two trips, the first with the stock
filter, and the second with the K&N. I refilled the tanks to
the tabs for the second flight so the weight would be identical.
I fly out of PAE with a field elevation of 603, so I went east to
Snohomish valley to start the test. At 500 MSL I entered a climb,
full rich and full power and Vy which
in the 140 is 85 mph IAS. Passing through 1000 I started the
timer. I noted the time and VSI at 2500 MSL and 5000 MSL. Passing
4000 MSL I leaned ro best power based
on EGT.
Here are the numbers:
MAX Static RPM Before 2410 After 2430
Time to climb
2500 Before 1:56 After 1:48
5000 Before 5:45 After 5:26
VSI
2500 Before 800 fpm After 800 fpm
5000 Before 650 fpm After 700 fpm
TAS 2650 RPM 5000 MSL PA Before 130 mph After 132 mph
For the maximum static rpm I did the run up at the end of the
flight so I was sure the engine was at operating temp. For the
TAS, I dialed in Pressure Altitude and flew at 5000 MSL at 2650
RPM (digital tach) and releanede to best power. This is far from a
scientific test, but with the digital instruments and the tests
within 15 minutes of each other, I think the results are fairly
accurate."
- Dave Wheeler
www.NorthwestSchoolOfAviation.com
"I am extremely happy with the filter and installation. This
filter has met every performance claim that Challenger has made.
We in the airplane market place talk about $1000 per knot
increase as an average for speed mods.
The K&N [Challenger air filter] has cost about $61 per knot.
THAT IS EXCELLENT. According to what I have found, if you wanted
you could turn down the power and do the same speed as before and
pay for this in fuel savings in about 150 hrs to 250 hrs @ .3 to
.5 gal per hour. I am very leery of performance claims made by
airplane modifications manufacturers - I think this item not only
met their claims on my aircraft but also far exceeded my own
expectations."
- Don Goings, about his recent purchase of a Cessna 182 air
filter
"I just had to test my Brackett filter against the
Challenger filter and found that I climb about 100 feet per
minute faster and burn less gas. My total fuel burn with the
Brackett was 6.8 gallons per hour. The Challenger filter dropped
that to 6.5 gallons per hour. I fly about 150 hours a year and
K&N will save me 45 gallons of gas."
- Don Shields, about his Cessna 172 Challenger air filter
"I recently purchased a Challenger filter for my Mooney. The
filter works great. In combination with my powerflow
exhaust header, I'm getting a 6-8% cruise speed increase."
- Dr. Eric Shreder
"I recently purchased your air filter and installed it on my
Bonanza. I was pleased with the quality of your product and the
ease of installation. I was mostly pleased , however, with
the extra inch of manifold pressure I found, which translated to
about three knots faster cruise! At our airport elevation
(Colorado Springs, Meadowlake, 6840'
ASL) and extra inch is MOST appreciated."
- Brian Walker
"I've been an A & P for over 20 years, so very little
about aircraft impresses me, but I have never seen a dirtier air
filter than a customer's Cherokee at annual with the new
Challenger/K&N air filter. It does the job!"
- Russ Hovey from Hovey Aviation
"I highly recommend this
Challenger Aviation unit for better filtration and added
power." (recently installed air filter on a Cessna 172M)
- Irv Allen from Allen Aviation, LLC, Independence, OR
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