K&N Air filter $50 - Is it worth it?
#1
03-11-2008, 08:31 PM
#2
03-11-2008, 09:57 PM
RE: K&N Air filter $50 - Is it worth it?
I honestly don't check the mileage or did I do a before and aftercomparison But I have the K&N and I think it works well..My intake tube is never lined with oil or soot..it is squeaky clean..So anyways, I know I'm getting optimum airflow...I did chisel out the baffling in the filter box to free up the air flow more..
#5
03-12-2008, 08:28 AM
RE: K&N Air filter $50 - Is it worth it?
I think you'd have to be a bit crazy to actually think your getting a performance upgrade by simply changing a filter. I'd only buy the K&N if you are looking for a quality filter not because you are looking for performance gain.
The benefits of having increased airflow really only show when your traveling constantly at high speeds at high rpm's. The factory X-Type airbox is very restricted but is completely sufficient unless you intend on running it at a consistent 130(+)mph on a track. This type of driving is where you would benefit from using an aftermarket set-up with increased airflow.
If you driving at these speeds then I would say it is essential to replace the factory airbox as your engine will not get enough airflow with the stock set-up. Though, if your just using your car as a daily commuter and rarely see 100+mph then you do not need a high airflow system as it will likely just trigger CEL and CNA errors.
The benefits of having increased airflow really only show when your traveling constantly at high speeds at high rpm's. The factory X-Type airbox is very restricted but is completely sufficient unless you intend on running it at a consistent 130(+)mph on a track. This type of driving is where you would benefit from using an aftermarket set-up with increased airflow.
If you driving at these speeds then I would say it is essential to replace the factory airbox as your engine will not get enough airflow with the stock set-up. Though, if your just using your car as a daily commuter and rarely see 100+mph then you do not need a high airflow system as it will likely just trigger CEL and CNA errors.
#6
03-12-2008, 09:43 AM
Senior Member
RE: K&N Air filter $50 - Is it worth it?
Ehhh quality, I'm not so much in agreement. Studies have proven that oem paper filters have better filtration than K&Ns and other open elements.
For me it's worth the price b/c I don't have to replace filters every time (I'm lazy). However, factor about $10 for the recharge kit.
As for performance, the contour forums have proven very negligible gains on the 2.5L. In fact some people lost power! Look up 'heat soak' a very common issue on open elements on upgrading your intake.
For me it's worth the price b/c I don't have to replace filters every time (I'm lazy). However, factor about $10 for the recharge kit.
As for performance, the contour forums have proven very negligible gains on the 2.5L. In fact some people lost power! Look up 'heat soak' a very common issue on open elements on upgrading your intake.
#7
03-12-2008, 11:00 AM
RE: K&N Air filter $50 - Is it worth it?
I wasnt looking for performance, but rather wanted a better air flow, which i heard is good :-)
I looked into my intake manifold and it was somewhat dirty with some oil inside. I figured good air filter should help and i dont have to worry about changing it again.
I looked into my intake manifold and it was somewhat dirty with some oil inside. I figured good air filter should help and i dont have to worry about changing it again.
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#8
03-12-2008, 01:03 PM
#9
03-12-2008, 01:08 PM
Senior Member
RE: K&N Air filter $50 - Is it worth it?
I've talked about the notion of doing an intake manifold cleaning. This is very common a la cleaners dumped into the vacuum ports. I personally do hand cleaning i.e. tearing the upper and lower intake manifold off. I've done it on a few 2.5Ls and a 3.0L Duratec. I've noticed considerable gas mileage increases, better idling and power restoration (psychological, as I don't have any dyno proof).
I'm hoping to do wires/plugs tune-up this summer on the Jag, and will take an extensive look at using the same method for UIM/LIM cleaning. I'll probably throw a post about it.
I haven't had a chance to touch the car except for oil changes due to this stupid winter sticking around for so long.
Sorry just re-read your post. You said oil. You sure it wasn't soot? Oil kind of throws a red flag at me.
I'm hoping to do wires/plugs tune-up this summer on the Jag, and will take an extensive look at using the same method for UIM/LIM cleaning. I'll probably throw a post about it.
I haven't had a chance to touch the car except for oil changes due to this stupid winter sticking around for so long.
Sorry just re-read your post. You said oil. You sure it wasn't soot? Oil kind of throws a red flag at me.
#10
03-12-2008, 01:24 PM
RE: K&N Air filter $50 - Is it worth it?
Increased airflow is what results in performance gain. You are not going to notice the increased airflow with a K&N regardless of what they advertise. You are simply changing a filter so unless your current one is dirty or you need a brand name on your filter you won't notice a difference and you might as well save your $50.
#11
03-12-2008, 02:05 PM
RE: K&N Air filter $50 - Is it worth it?
We get the idea Arden..you don't like K&N..fine..
Once you pay $50.00 for the K&N you're done...using a OEM filter at $25.00 each you will go through maybe $200.00 or more in the life of the car...That in it's self, is enough justification for a K&N.
For the record, I have a new OEM filter and a K&N to test and I can see a little improvement in responsiveness with the K&N over the paper filter....And my intake tube is clean as a whistle.
Once you pay $50.00 for the K&N you're done...using a OEM filter at $25.00 each you will go through maybe $200.00 or more in the life of the car...That in it's self, is enough justification for a K&N.
For the record, I have a new OEM filter and a K&N to test and I can see a little improvement in responsiveness with the K&N over the paper filter....And my intake tube is clean as a whistle.
#12
03-12-2008, 02:17 PM
RE: K&N Air filter $50 - Is it worth it?
I have nothing against K&N. I am simply saying that it is merely a filter change so there's not going to be any significant increase in airflow that would make it worth buying in that respect.
Assuming you bought a new car, Jaguar will change these filters routinely so from my experience with the factory airbox I have never had to purchase an OEM filter.
Assuming you bought a new car, Jaguar will change these filters routinely so from my experience with the factory airbox I have never had to purchase an OEM filter.
#13
03-12-2008, 02:24 PM
RE: K&N Air filter $50 - Is it worth it?
That is very true...I don't mean to argue..It's just that there is some miss information On both sides about K&N and they have an unfair rap..Every race car owner I know, ALL run with K&N for better performance.
Anyways..[sm=icon_cheers.gif]
Anyways..[sm=icon_cheers.gif]
#14
03-12-2008, 03:20 PM
#17
03-12-2008, 08:32 PM
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RE: K&N Air filter $50 - Is it worth it?
Hey ruslan..........re the K&N filter
Seen many posts about this over a long period of time and mostly everyone seems to agree that there is little / no performance increase from these filters, which you can buy off Ebay I believe for around the $37 btw.
You will save on costs against paper filters but as stated will have to clean it out and re oil etc every 10,000 - 20,000 miles depending on conditions.
Jim
#19
03-12-2008, 08:48 PM
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RE: K&N Air filter $50 - Is it worth it?
Keep this in mind.. air filters are there to trap dirt.. and as they get dirty, they flow less air. It is completely normal for this to happen. Because the filter is supposed to get dirty it is sized so that it has way way way more flow capacity than the engine uses when the filter is new.
The filter needs to be SEVERELY dirty before it has an effect on the motor.
The K&N guys like to compare clean filters, but it is really a useless comparison.
The cost per mile is a good thing to consider, when looking at a re-useable filter.
the difference in particle size that is trapped is also not very important.. 99.9999% of the air that is sucked into the motor is passed out the exhaust. even a grain of sand will most likely never touch a cylinder wall or a valve, unless thereis a lot ofit.The most likely particles of dirt to stick to the cylinder walls are the smallest particles, and neither filter will stop these..
THe air filter is there to stop leaves, bugs, and big dirt.Probably more important on your chain saw and lawnmover than your car. Outboard motors, snowmobiles, dont even have air filters.
The filter needs to be SEVERELY dirty before it has an effect on the motor.
The K&N guys like to compare clean filters, but it is really a useless comparison.
The cost per mile is a good thing to consider, when looking at a re-useable filter.
the difference in particle size that is trapped is also not very important.. 99.9999% of the air that is sucked into the motor is passed out the exhaust. even a grain of sand will most likely never touch a cylinder wall or a valve, unless thereis a lot ofit.The most likely particles of dirt to stick to the cylinder walls are the smallest particles, and neither filter will stop these..
THe air filter is there to stop leaves, bugs, and big dirt.Probably more important on your chain saw and lawnmover than your car. Outboard motors, snowmobiles, dont even have air filters.
#20
03-12-2008, 09:23 PM