Effect of K&N or Green Filters on Diesel cars?

ezee · 16th May 2009, 15:15

I am planning to change the stock filters of my Logan Diesel to K&N or Green filters, but I am not sure doing this will benefit or not?

I have heard that CAI and Green Filters are effective in petrol cars only. Can you guys post any experience with such filters on Diesel cars? About the performance improvement, effect on engine, HP/Torque/Pickup increases etc?

v1p3r · 16th May 2009, 15:35

Yes, it will help. In absolute terms, you will have to do a stopwatch comparison test, before and after fitment. There will be a noticeable gain. Whether it is worth the price is another question.

rider60 · 16th May 2009, 15:53

i am running a CAI for the past 2 years on my accent Viva crdi the difference is very very noticeable and the car now with bigger tyres has much better drive-ability in the city especially at the RED lights the car use to struggle to take off with those huge tyres but now its all gone and feels better than stock.

yes they do benifit the Diesel as good as Petrol cars i guess, i am sure in my case atleast!

Ricky_63 · 16th May 2009, 16:20

I had changed to Green Stock replacement filter as it was reccomended by Pete's BUT I did not notice any real-time change in performance.

I changed because it made economic sense, as Skoda Air Filter (stock) costs around 1900/- (don't really remember the exact figure) so effectively for the cost of 2.5 stock filters I got one which will last the life of the car or pretty close to that !

And yes, my car is re-mapped.

Cheers

Akshay1234 · 16th May 2009, 20:58

hey it will make your car a bit more free revving and add a nice sound. it will definitely help your car though it might be more from your mind. lol

rider60 - bro if your car struggled to move with 195s then there is something wrong with your car. its only 20mm bigger than stock.

ezee · 16th May 2009, 21:45

Is that recommenended to go for CAI or only replacement of stock filter with a green or K&N will do the purpose?

Also any purchase options in Gurgaon?

vdiatech · 16th May 2009, 21:56

I use a replacement K&N for the only reason that , without the air box I fear that hot air from around the engine area would be sucked in if the conical filter is not installed properly and also worry if the air/fuel mix will be too lean . I could be wrong, but without any before and after dyno results, its hard to say if these really attribute to any gains in performance. They do sound nice and you will be tempted to put your foot down hard many a time, affecting the FE.

atleast, known advantage with replacement K&N is, they last a life time and can be cleaned and probably dont restrict the air flow as much as the OEM filters

rider60 · 19th May 2009, 08:31

Quote:

Originally Posted by akshay1234

hey it will make your car a bit more free revving and add a nice sound. it will definitely help your car though it might be more from your mind. lol

rider60 - bro if your car struggled to move with 195s then there is something wrong with your car. its only 20mm bigger than stock.

DUDE i am running a 7% bigger tyres its not just 195s its 195/60-R15, and the car does not struggle, its just that it does not have the Maverick kind of launch that it has with the STOCK tyres

.

and with the CAI and no other mods it behaves like a stock car

.

Ravindra M · 19th May 2009, 09:06

Quote:

Originally Posted by vdiatech

atleast, known advantage with replacement K&N is, they last a life time and can be cleaned and probably dont restrict the air flow as much as the OEM filters

I heard that the oil residues from K&N often gets deposited on the Air-mass sensor of the engine management system. These deposites slowly degrade the performance because of the drift and and it can not be diagnosed. Air-mass sensor is not a servicable component and costs a bomb to replace. Be careful !!

vdiatech · 19th May 2009, 16:35

Quote:

Originally Posted by Ravindra M

I heard that the oil residues from K&N often gets deposited on the Air-mass sensor of the engine management system. These deposites slowly degrade the performance because of the drift and and it can not be diagnosed. Air-mass sensor is not a servicable component and costs a bomb to replace. Be careful !!

Oil residues from a K&N replacement air filter ? I am confused mate. Please explain. I was not aware of such things, thanks for the warning !

Jaggu · 19th May 2009, 16:36

He meant the oil that is smeared over the filter after cleaning, which can get to the air map sensor.

greenhorn · 19th May 2009, 16:39

Air Filtration Test

mandatory reading for those of you thinking about getting an aftermarket air filter

Jaggu · 19th May 2009, 17:06

had seen this, nice read though. Its always a compromise between performance and filtration, isnt it.

The thing one can ensure is, you clean your non oe filters at regular intervals as you would with the paper filters, for best results.

punterccrx8s · 30th May 2012, 09:34

Sorry for reviving an old thread but I would like to ask if I can fit my green conical(performance) filter for my i20 diesel?If so what are the disadvantages?

satya180 · 3rd June 2012, 11:24

i am running a Green Storm CAI on the Swift VDi since almost a year now, and i am very happy with the overall gains.

16th May 2009, 15:15	#1
ezee BHPian Join Date: Jan 2008 Location: Gurgaon Posts: 203 Thanked: 213 Times	Effect of K&N or Green Filters on Diesel cars? I am planning to change the stock filters of my Logan Diesel to K&N or Green filters, but I am not sure doing this will benefit or not? I have heard that CAI and Green Filters are effective in petrol cars only. Can you guys post any experience with such filters on Diesel cars? About the performance improvement, effect on engine, HP/Torque/Pickup increases etc?
	() Thanks

16th May 2009, 15:35	#2
v1p3r Senior - BHPian Join Date: Feb 2005 Location: BLR / DXB / LON Posts: 5,334 Thanked: 6,896 Times View My Garage	Yes, it will help. In absolute terms, you will have to do a stopwatch comparison test, before and after fitment. There will be a noticeable gain. Whether it is worth the price is another question.
	() Thanks

16th May 2009, 15:53	#3
rider60 Senior - BHPian Join Date: Mar 2007 Location: Bhagyanagaram. (A.K.A. Hyderabad) Posts: 1,620 Thanked: 56 Times View My Garage	i am running a CAI for the past 2 years on my accent Viva crdi the difference is very very noticeable and the car now with bigger tyres has much better drive-ability in the city especially at the RED lights the car use to struggle to take off with those huge tyres but now its all gone and feels better than stock. yes they do benifit the Diesel as good as Petrol cars i guess, i am sure in my case atleast!
	() Thanks

16th May 2009, 16:20	#4
Ricky_63 Senior - BHPian Join Date: Dec 2006 Location: Gurgaon Posts: 3,885 Thanked: 518 Times View My Garage	I had changed to Green Stock replacement filter as it was reccomended by Pete's BUT I did not notice any real-time change in performance. I changed because it made economic sense, as Skoda Air Filter (stock) costs around 1900/- (don't really remember the exact figure) so effectively for the cost of 2.5 stock filters I got one which will last the life of the car or pretty close to that ! And yes, my car is re-mapped. Cheers Last edited by Ricky_63 : 16th May 2009 at 16:23.
	() Thanks

16th May 2009, 20:58	#5
Akshay1234 Team-BHP Support Join Date: Dec 2006 Location: Mumbai Posts: 10,265 Thanked: 12,317 Times	hey it will make your car a bit more free revving and add a nice sound. it will definitely help your car though it might be more from your mind. lol rider60 - bro if your car struggled to move with 195s then there is something wrong with your car. its only 20mm bigger than stock.
	(1) Thanks

16th May 2009, 21:45	#6
ezee BHPian Join Date: Jan 2008 Location: Gurgaon Posts: 203 Thanked: 213 Times	Is that recommenended to go for CAI or only replacement of stock filter with a green or K&N will do the purpose? Also any purchase options in Gurgaon? Last edited by ezee : 16th May 2009 at 21:49.
	() Thanks

16th May 2009, 21:56	#7
vdiatech BHPian Join Date: Mar 2009 Location: Bangalore Posts: 414 Thanked: 10 Times	I use a replacement K&N for the only reason that , without the air box I fear that hot air from around the engine area would be sucked in if the conical filter is not installed properly and also worry if the air/fuel mix will be too lean . I could be wrong, but without any before and after dyno results, its hard to say if these really attribute to any gains in performance. They do sound nice and you will be tempted to put your foot down hard many a time, affecting the FE. atleast, known advantage with replacement K&N is, they last a life time and can be cleaned and probably dont restrict the air flow as much as the OEM filters
	() Thanks

19th May 2009, 16:36	#11
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	He meant the oil that is smeared over the filter after cleaning, which can get to the air map sensor.
	() Thanks

19th May 2009, 16:39	#12
greenhorn Senior - BHPian Join Date: Apr 2007 Location: KL-01 Posts: 7,745 Thanked: 4,402 Times View My Garage	Air Filtration Test mandatory reading for those of you thinking about getting an aftermarket air filter
	() Thanks

19th May 2009, 17:06	#13
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	had seen this, nice read though. Its always a compromise between performance and filtration, isnt it. The thing one can ensure is, you clean your non oe filters at regular intervals as you would with the paper filters, for best results. Last edited by Jaggu : 19th May 2009 at 17:07.
	() Thanks

30th May 2012, 09:34	#14
punterccrx8s BHPian Join Date: Jun 2007 Location: Bangalore Posts: 760 Thanked: 170 Times	Re: Effect of KN or Green Filters on Diesel cars? Sorry for reviving an old thread but I would like to ask if I can fit my green conical(performance) filter for my i20 diesel?If so what are the disadvantages?
	() Thanks

3rd June 2012, 11:24	#15
satya180 BHPian Join Date: Dec 2005 Location: Pune Posts: 204 Thanked: 427 Times	Re: Effect of K&N or Green Filters on Diesel cars? i am running a Green Storm CAI on the Swift VDi since almost a year now, and i am very happy with the overall gains.
	() Thanks