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Been using K&N drop-in air filter for 2 weeks

Naresh

By Naresh,
in Performance and Tuning

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Contipro

Contipro

5th Gear

use it and sold my K&N filter. not suitable as I drive very frequent to dusting area (industrial site). 

no time and too tedious to maintain it (cleaning and etc). 

Use stock filter, just change it whenever is required. 

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FrankNathan

FrankNathan

Clutched

Hi guys, can someone advise me please.

 

I am comparing 2 brands of air filter for my Honda Civic – K&N vs BMC.

 

What is a a better buy, please?  [wave]

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RadX

RadX

Moderator

Hi guys, can someone advise me please.

 

I am comparing 2 brands of air filter for my Honda Civic â K&N vs BMC.

 

What is a a better buy, please? [wave]

No need spam entire forum
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Zep

Zep

Neutral Newbie

I know this is old thread but watch this guys before you decide to use aftermarket filters. It's all up to you.

 

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Watwheels

Watwheels

Supersonic
(edited)
9 hours ago, Zep said:

I know this is old thread but watch this guys before you decide to use aftermarket filters. It's all up to you.

 

All such videos only shows a short term test on the dyno. Imo it is rubbish. Cos long term the oil on the air filter will get to the MAF sensor aka air sensor. If turbocharged it will also get to the MAP sensor aka boost or air pressure sensor. The oil will damage the air sensors. It is not about "all up to you". With oil coated around where the important part of the sensor is it will impede the engine performance and ultimately gives you engine error code. These are the things such videos do not tell you. Their objective is to promote whatever they are promoting.

Edited by Watwheels
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kobayashiGT

kobayashiGT

Internal Moderator
On 7/7/2022 at 8:22 AM, Watwheels said:

All such videos only shows a short term test on the dyno. Imo it is rubbish. Cos long term the oil on the air filter will get to the MAF sensor aka air sensor. If turbocharged it will also get to the MAP sensor aka boost or air pressure sensor. The oil will damage the air sensors. It is not about "all up to you". With oil coated around where the important part of the sensor is it will impede the engine performance and ultimately gives you engine error code. These are the things such videos do not tell you. Their objective is to promote whatever they are promoting.

That's when a oil catch tank come in handy! :grin:

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kobayashiGT

kobayashiGT

Internal Moderator
On 9/1/2022 at 9:48 PM, Aurimas said:

Is it ok that I have to change filters every 2 years?

If you drive 40000km a year, then cannot change every 2 years. However, if you really wanna prolong your changing, I will recommended you to choose OEM filter. The manufacturer knows what they are doing unlike some sakura brand. 

So you have to choose your poison carefully. 

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Watwheels

Watwheels

Supersonic
10 minutes ago, kobayashiGT said:

That's when a oil catch tank come in handy! :grin:

That's for the pcv return hose. The oil I mentioned is from the k&n air filter. The oil from the filter dont stay at where they are. It will move together with the airflow and accumulate on the air sensors. The sensors will get damaged by the oil.

Either you wash most of the oil away or you get another filter that has no oil as a filter element.

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kobayashiGT

kobayashiGT

Internal Moderator
30 minutes ago, Watwheels said:

That's for the pcv return hose. The oil I mentioned is from the k&n air filter. The oil from the filter dont stay at where they are. It will move together with the airflow and accumulate on the air sensors. The sensors will get damaged by the oil.

Either you wash most of the oil away or you get another filter that has no oil as a filter element.

I see the red oil you are talking about. That is inevitable. too dry won't have the filtration effect, too wet will sip some oil into the engine. 

The world is like this one. nothing is perfect. hahahah. 

You win some you lose some. :grin:

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Mkl22

Mkl22

Supersonic
40 minutes ago, kobayashiGT said:

If you drive 40000km a year, then cannot change every 2 years. However, if you really wanna prolong your changing, I will recommended you to choose OEM filter. The manufacturer knows what they are doing unlike some sakura brand. 

So you have to choose your poison carefully. 

sakura is Indonesian brand with a japanese sounding name. smoke a lot of people thinking it is Made in Japan and is very high quality.

my original air filter changed at 30k km still looked clean enough, even the mechanic was surprised. will shift the next change to 40k km. i guess the reason why is largely highway driving with the panel being pretty large with quite some pleats for the size of the engine.

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Mkl22

Mkl22

Supersonic
47 minutes ago, kobayashiGT said:

That's when a oil catch tank come in handy! :grin:

no la. oil catch can, will only catch engine oil blow by from the top of the valve cover. nothing to do with air filter

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Shibadog

Shibadog

Turbocharged
On 7/7/2022 at 8:22 AM, Watwheels said:

All such videos only shows a short term test on the dyno. Imo it is rubbish. Cos long term the oil on the air filter will get to the MAF sensor aka air sensor. If turbocharged it will also get to the MAP sensor aka boost or air pressure sensor. The oil will damage the air sensors. It is not about "all up to you". With oil coated around where the important part of the sensor is it will impede the engine performance and ultimately gives you engine error code. These are the things such videos do not tell you. Their objective is to promote whatever they are promoting.

i used a K&N drop in panel filter in my TC subaru for 6yr (150k km) without issue. Washed and re-oiled at shorter intervals every 20-30k.

btw i'm not selling K&N stuff

 

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kobayashiGT

kobayashiGT

Internal Moderator
20 hours ago, Shibadog said:

i used a K&N drop in panel filter in my TC subaru for 6yr (150k km) without issue. Washed and re-oiled at shorter intervals every 20-30k.

btw i'm not selling K&N stuff

 

I am also on K&N filter. hahaha. But I never use the K&N oil. I bought some filter oil from amazon, it will decent too. 

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Vratenza

Vratenza

Supersonic
On 9/5/2022 at 12:35 PM, Shibadog said:

i used a K&N drop in panel filter in my TC subaru for 6yr (150k km) without issue. Washed and re-oiled at shorter intervals every 20-30k.

btw i'm not selling K&N stuff

 

had it on my mazda 6 NA and LGT, realised that over time , the idling will get rougher and slight erratic. I have to periodically DIY remove the MAF sensor to clean and also clean the throttle body. Noticed the surface of the throttle valves are coated with a greasy layer with some dust embedded.

After 2 cars, decided to lay off K&N and stick with factory spec filters.

Lesson learnt.

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