IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

K&N air filter

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Old 08-09-11, 02:32 PM
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ISF350
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Default K&N air filter

I'm looking to buy the filter. Has anyone installed the K&N drop in filter? Does it has any affect to the car performance? Does it has any problem with air flow or any related to electronic flow control ?
Let me know.
Thanks all !
Old 08-09-11, 02:47 PM
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Iceman5210
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Its pretty much the same as stock with more air flow, I had it on for 3 months till i got the f sport intake
Old 08-09-11, 03:41 PM
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ISF350
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so there isn't any problem w/ air flow sensor and performance ?
Old 08-09-11, 04:11 PM
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anthrax144
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Only difference between K&N/Blitz/F-sport and stock is they don't need to be replaced. K&N is an oiled filter, Blitz and F-sport are dry. When cleaning the K&N, just don't over-oil it and let it dry out completely before re-installing.
Old 08-09-11, 05:19 PM
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istarzan
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Originally Posted by anthrax144
Only difference between K&N/Blitz/F-sport and stock is they don't need to be replaced. K&N is an oiled filter, Blitz and F-sport are dry. When cleaning the K&N, just don't over-oil it and let it dry out completely before re-installing.
Slightly off topic, but do you know how to clean the F sport filter?
Old 08-09-11, 05:43 PM
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RAMAIR
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I have the drop in one, Im going to toss it when I replace it with a toyota one... I cleaned my MAF and it seemed to collect quite a bit of dirt with the oil filter... Really no performance increase as the factory filters are oversized for the car as it is...

I SEE NO BENIFIT in fact ill sell you mine for $25 bucks... I have the reciept its 4 or 5 months old...
Old 08-09-11, 05:46 PM
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I have the K&N drop-in...so far, only great things to say about it! Give the motor a tad more grunt (noise only) in the low rpms. But the added plus I've found is a bit more fuel mileage. I've not changed my driving style and still get whatever premium fuel wherever I can...but I've seen a noticeable increase in mileage.

No issues at all regarding the MAF sensor.

Already got a cleaning kit too for future filter cleanings. The oil now comes in an aerosol can, so it'll spread more evenly.
Old 08-09-11, 08:39 PM
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anthrax144
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Originally Posted by istarzan
Slightly off topic, but do you know how to clean the F sport filter?
Get the cleaning solution...

http://is.sewellparts.com/accessorie...2006/2155.html
Old 08-09-11, 09:07 PM
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istarzan
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Originally Posted by anthrax144
^ Thanks! 10 char
Old 08-09-11, 10:22 PM
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ddhleigh
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Originally Posted by Gville350
I have the K&N drop-in...so far, only great things to say about it! Give the motor a tad more grunt (noise only) in the low rpms. But the added plus I've found is a bit more fuel mileage. I've not changed my driving style and still get whatever premium fuel wherever I can...but I've seen a noticeable increase in mileage.

No issues at all regarding the MAF sensor.

Already got a cleaning kit too for future filter cleanings. The oil now comes in an aerosol can, so it'll spread more evenly.
Is there a part # for the K&N drop in?
Old 08-09-11, 10:32 PM
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Originally Posted by ddhleigh
Is there a part # for the K&N drop in?
http://lmgtfy.com/?q=lexus+is250+k%26n+filter
Old 08-10-11, 05:58 AM
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Originally Posted by anthrax144
Only difference between K&N/Blitz/F-sport and stock is they don't need to be replaced. K&N is an oiled filter, Blitz and F-sport are dry. When cleaning the K&N, just don't over-oil it and let it dry out completely before re-installing.
This is good advice

I cleaned and oiled my K&N filter about six months ago - I think I over oiled it, but I didn't really notice any problems after.

Last week I used the CRC brand aerosol MAF cleaner, and noticed a pretty significant difference in idle smoothness and uptick in MPG.
Old 08-10-11, 06:33 AM
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I used K&N AIR FILTER and didn't see any gain in performance but MPG
Old 08-10-11, 07:13 AM
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K&N has definitely become one of the most recognizable names among air filters/intakes. Our customers that have purchased a K&N air intake or a K&N air filter are very happy with the performance.

For those looking into getting an intake or an air filter, definitely consider K&N. We offer a free air cleaner kit with the purchase of a K&N air intake.

Last edited by XenonDepot; 08-10-11 at 07:19 AM.
Old 08-10-11, 11:25 AM
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Kurtz
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Originally Posted by Gville350
I have the K&N drop-in...so far, only great things to say about it! Give the motor a tad more grunt (noise only) in the low rpms. But the added plus I've found is a bit more fuel mileage. I've not changed my driving style and still get whatever premium fuel wherever I can...but I've seen a noticeable increase in mileage.
that's because you replaced a dirty air filter with a clean one.

Changing a clean filter for any other clean filter will not and can not alter your fuel mileage on a modern MAF/O2 closed loop design gas engine vehicle.


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