K&N Air filters- What a difference!
#1
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My friend put a K&N air filter in his parents 09 XF and he told me the K&N filter made a huge difference. With the new XF having 2 air box's and the XFR being supercharged I knew I would also be able to see a difference.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
#2
![Default](/forum/images/icons/icon1.gif)
My friend put a K&N air filter in his parents 09 XF and he told me the K&N filter made a huge difference. With the new XF having 2 air box's and the XFR being supercharged I knew I would also be able to see a difference.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
#4
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#6
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I thought my friend was pulling my leg until I installed them I realized the difference. Keep in mind the 5.0 has a dual intake so you are replacing 2 restrictive filters. An $82 mod for me was well worth it. Mileage is already better too. Lastly newer cars are more intuitive so I think the gains are greater especially with mass air flow meters compared to speed density technology.
#7
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#9
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Install was very straight forward- you just need a torx socket/tool to loosen the air-boxes. Might be a T-10 can't remember, but there are like 8 or so on each air box. Just take your time on the passenger air box because when you go to lift the lid; it's a tight fit to get it up thru a near by bracket.
20 minutes max for install and if you have an extra set of hands the other person can hold up the air box while you lift out the old filter and insert the new one.
Let me know how it goes. If you decide to do it after the holidays shoot me a message and I can stop by and give you a hand.
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#10
![Default](/forum/images/icons/icon1.gif)
My friend put a K&N air filter in his parents 09 XF and he told me the K&N filter made a huge difference. With the new XF having 2 air box's and the XFR being supercharged I knew I would also be able to see a difference.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
I was proven right because right after I put them in the car woke up and even the gas mileage went up a little bit. The tires wanted to break loose and the throttle response was crisper and more responsive.
No doubt the car can breathe a lot better now. The factory air filters are not only restrictive but they are twice the thickness of a normal air filter. This was clearly a great first mod. Just thought I would share my feedback.
This was my first mod also, and yes they do make a difference. I also have had either K&N or other cone filters in most of my rides.
#11
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#15
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Mike
#17
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Okay, now here is a what could be a stupid question . . . how much different is a cold air intake than changing the air filters to K&N? I ask this because, last year, my wife wanted to get me the dual cold air intakes required for my XFR for Christmas. When we asked my service consultant, he told me not to do it because it throws off the ECU air/fuel mix and will trip the check engine light. He also told me that since the intakes are down low, it may bring in unwanted moisture that could cause damage.
I'm definitely interested in doing some modifications, and the K&N is a natural first step. But want to make sure it works well with no warranty or reliability issues.
I'm definitely interested in doing some modifications, and the K&N is a natural first step. But want to make sure it works well with no warranty or reliability issues.
#18
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The stock air boxes are already cold air intakes, so make sure that anyone offer a re-design of that also have made it in such a way you still get cold air (outside hot engine bay!).
Next hurdle are the MAF sensors, they are very sensitive, so altering the airflow (by for instance putting the MAF sensor in a new tube) will have a negative effect as the service consultant mentioned.
One would have to do some extensive testing, and should be able to produce some reports for example in airflow (off and on the car)/power delivery etc, and if the selling company is not able to produce this, stay away from them!
Next hurdle are the MAF sensors, they are very sensitive, so altering the airflow (by for instance putting the MAF sensor in a new tube) will have a negative effect as the service consultant mentioned.
One would have to do some extensive testing, and should be able to produce some reports for example in airflow (off and on the car)/power delivery etc, and if the selling company is not able to produce this, stay away from them!
#19
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I stayed away from that particular mod because of the warranty and possible finger pointing if there was a future problem. BUT with that said, I installed the K&N cold air induction kit on my 1999 Toyota Land Cruiser and it made a world of difference. The L/C got louder and you can definitely hear the engine roar (air suction) inside the cabin but the engine is much more responsive. So much so that two of my friends went and ordered the kit for their SUVs based upon what they saw after I installed mine. And there have been no issues with the MAF sensor in the L/C.
#20