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Guest Message by DevFuse

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Register your Fusion Hybrid at the official Ford authorized registry here.


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K&N Engine Air Filter


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22 replies to this topic

#1 OFFLINE   GrySql

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Posted 02 August 2015 - 05:17 PM

I was looking at buying a new Motorcraft engine air filter and accidentally came across the K&N 33-5001 Replacement Air Filter.  They are a lot more expensive than a paper filter and hard to justify financially but decided to try it, unfortunately the K&N website said they were 'out of stock' - nuts.

As always my main go-to place was Amazon and sure enough they had them available, so I ordered one.

It should arrive tomorrow and I'll do an update.

typingsmiley.gif

 

 

Attached File  Screen Shot 2015-08-02 at 3.11.57 PM.png   253.02KB   0 downloads


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#2 OFFLINE   storksb

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Posted 02 August 2015 - 05:40 PM

Let us know how it performs. I've used them in the past on a Volvo V40 and had good results.

 

Not sure I would get one for my FFE, the engine runs so rarely it would make any sense financially compared to the stock filter.



#3 OFFLINE   ptjones

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Posted 02 August 2015 - 08:36 PM

I bought one and tested it and their is a difference, but I not sure in our CMAX/FFH we don't use high power often so may not help MPG's. I put it in anyway.  :)

 

Paul


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Current Record:  12/30/2014  902.2 mi.  63.8 mpg  14.13  gal. (Actual GPS:  922 mi.  68 mpg  13.5 gal.


#4 OFFLINE   GrySql

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Posted 03 August 2015 - 12:02 AM

 I put it in anyway.  

My thoughts exactly, why not.  

With a car that requires so little maintenance I had to think of some modification to complicate things... ;)

 

A Sharkfin, chrome door handle surrounds, better lugnuts, trunk rubber mat, upgraded floor mats, updated ICE intake air hose, hood struts, all 10 windows tinted with Air Blue, spare tire setup, better tires and and a Partridge in a Pear Tree. 

Plus this K&N filter, maybe it will quiet down the Atkinson blowback groan.


Edited by GrySql, 03 August 2015 - 12:15 AM.

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#5 OFFLINE   Waldo

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Posted 03 August 2015 - 08:16 AM

I stopped using K&N's several years ago after the oil messed up my MAF sensor in my Focus.  If you're religious about keeping it oiled properly (not too much, not too little) then it shouldn't be a problem, but that will likely mean you're doing more maintenance than just replacing the stock filter every once in a while, not less.  I also am skeptical about the benefits, if it's truly more "efficient", then it can really only do that by letting in more dirt.  Over on the Flex forum one member was denied warranty coverage when his turbos blew up because he had a K&N, they had evidence of dirt ingestion, which is otherwise very rare on those vehicles.


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#6 OFFLINE   GrySql

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Posted 03 August 2015 - 09:32 AM

I stopped using K&N's several years ago after the oil messed up my MAF sensor in my Focus.  If you're religious about keeping it oiled properly (not too much, not too little) then it shouldn't be a problem, but that will likely mean you're doing more maintenance than just replacing the stock filter every once in a while, not less.  I also am skeptical about the benefits, if it's truly more "efficient", then it can really only do that by letting in more dirt.  Over on the Flex forum one member was denied warranty coverage when his turbos blew up because he had a K&N, they had evidence of dirt ingestion, which is otherwise very rare on those vehicles.

I saw the Flex turbo story and have hear of other 'dirt past the filter' stories, sorry to hear of that Focus story.

I looked at aFE but they don't offer a 'dry filter' like I had on my Flex.  Plus, I used an aFE oiled CAI on my Mustang GT for 70k miles.

 

I'll take the chance since none of us are racing this car and I don't do dirt roads. A little maintenance is okay, been doing it all my life.

I probably wash my cars too much too.

smileys-car-driving-659430.gif


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Custom ordered, build date: 11/30/12, delivered: 12/12/12 - Sold: 09/05/15
 

#7 OFFLINE   talmy

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Posted 03 August 2015 - 09:34 AM

The auto makers went from oil bath to paper air filters decades ago partly because of the better filtration. There's also the advantage of longer service interval and simpler servicing. About the only downside was as the filter got dirty it would pass less air, choking the engine (more fuel consumption and potential loss of top end power). Fuel injection solved the fuel consumption issue. I personally wouldn't trust a K&N unless I were racing the car (and I don't!) and wanted the maximum possible power without consideration of engine damage. 



#8 OFFLINE   GrySql

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Posted 03 August 2015 - 03:47 PM

Throwing caution to the wind and jumping on the grenade I installed the K&N air filter and went for a spin.

Right off, the air intake growl of the Atkinson motor was less, otherwise the ICE performed as usual, even my wife commented about the lesser amount of the moose call noise.   :)

For everything else it's too early to tell but it fit perfect and had a tight seal when I screwed the lid back in place.

 

In addition, no need to service the filter for 50,000 miles of 'normal driving', which is all I do.

(Edit: Let's see, at $17.99 for a Motorcraft Air filter (Amazon) every 20k miles, I'll need 2.5 of them in the next 50k miles.  That's $44.97.

The K&N cost $44.27.  I think that is pretty close and I won't have to lift the lid to service the filter 2.5 times in the next 50k miles either.)

 

I also found it interesting that K&N now puts a special card in the box that consumers are told to keep in their car.  If any Dealer or auto service company tells you that a warranty service is denied it has a K&N phone number we are supposed to call, K&N will then engage that company immediately.  Think what you will about that but I followed instructions and put the card in the glovebox.

 

Attached File  K&N card.jpg   302.68KB   0 downloads


Edited by GrySql, 04 August 2015 - 11:02 PM.

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The Time Machine....
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Custom ordered, build date: 11/30/12, delivered: 12/12/12 - Sold: 09/05/15
 

#9 OFFLINE   ptjones

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Posted 04 August 2015 - 06:56 PM

The reason the K&N air filter lets more air through is it has more surface area than the FORD one.  I think I have 60K mi. on mine, but I only use ICE half the time. :)

 

Paul


163299.png 600 Club

Current Record:  12/30/2014  902.2 mi.  63.8 mpg  14.13  gal. (Actual GPS:  922 mi.  68 mpg  13.5 gal.


#10 OFFLINE   Waldo

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Posted 05 August 2015 - 08:02 AM

The reason the K&N air filter lets more air through is it has more surface area than the FORD one.  I think I have 60K mi. on mine, but I only use ICE half the time. :)

 

Paul

 

But that's not really useful.  Allowing more air through isn't of any benefit unless the air filter is the restriction at WOT.  Ford would be doing some pretty poor engineering if this were the case.  The engine needs a certain amount of air to produce a certain amount of torque, if the filter "lets more air through", then the computer will just close the throttle and the end result is exactly the same amount of air entering the engine.

At WOT the amount of air entering the engine is going to be dictated by the most restrictive part of the intake system, and if it's designed properly, that restriction will be the throttle body.


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#11 OFFLINE   Automate

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Posted 05 August 2015 - 08:34 AM

 

At WOT the amount of air entering the engine is going to be dictated by the most restrictive part of the intake system,  and if it's designed properly, that restriction will be the throttle body.

Not true.  All the restrictions between ambient air and the engine cylinders are additive.  That's why performance tuners "port and polish" the entire intake system.  Porting is enlarging the cross sectional area and polishing is making the walls smother to reduce air flow resistance.  Restrictions upstream of the throttle body matter also such, as the air filter.


Edited by Automate, 10 August 2015 - 06:27 AM.


#12 OFFLINE   lolder

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Posted 05 August 2015 - 08:46 AM

What is NASCAR "restrictor plate" racing?



#13 OFFLINE   Automate

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Posted 05 August 2015 - 09:51 AM

What is NASCAR "restrictor plate" racing?

Are you trying to infer that just because NASCAR engines have a restrictor plate their engine developers don't try and optimize the design of the rest of the intake system?



#14 OFFLINE   hybridbear

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Posted 09 August 2015 - 03:09 PM

I think he was just asking a question. I'm also curious what restrictor plate racing means...


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#15 OFFLINE   Automate

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Posted 09 August 2015 - 03:27 PM

I'm also curious what restrictor plate racing means...

From Wikipedia

"restrictor plate or air restrictor is a device installed at the intake of an engine to limit its power. This kind of system is occasionally used in road vehicles (e.g., motorcycles) for insurance purposes, but mainly in automobile racing, to limit top speed and thus increase safety, to provide equal level of competition, and to lower costs; insurance purposes have also factored in for motorsports."

 

https://en.wikipedia...estrictor_plate


Edited by Automate, 09 August 2015 - 03:28 PM.

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#16 OFFLINE   murphy

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Posted 09 August 2015 - 04:23 PM

Basically a restrictor plate reduces the horsepower of the engine.  At Daytona and Talladega Nascar does not want the cars to be able to exceed 200 mph. 


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#17 OFFLINE   GrySql

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Posted 09 August 2015 - 09:13 PM

The K&N is working fine.
http://fordfusionhyb...-plugs/?p=99317
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Custom ordered, build date: 11/30/12, delivered: 12/12/12 - Sold: 09/05/15
 

#18 OFFLINE   lolder

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Posted 09 August 2015 - 10:21 PM

I was disputing the "not true" post about restrictions. It was true but also lower friction is desirable and losses are cumulative but if you have a significant restriction like a poor filter or a "NASCAR" restrictor plate, that far outweighs the advantage of polished ports and is the overriding controlling factor.


Edited by lolder, 09 August 2015 - 10:24 PM.


#19 OFFLINE   GrySql

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Posted 16 August 2015 - 11:14 PM

Just got back from a 1,200 mile trip and found that the noise from the Atkinson blowback is reduced.  The car ran great, so far no complaints.


Edited by GrySql, 16 August 2015 - 11:14 PM.

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#20 OFFLINE   storksb

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Posted 17 August 2015 - 03:52 PM

Any improvement in fuel efficiency?






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