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Old 26th September 2008, 15:39   #16
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Replacement filter and Performance Filter will give you the same FE PROVIDED you drive the same way with them as you are driving without them PERIOD.
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Old 26th September 2008, 17:22   #17
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Originally Posted by ashok_lat View Post
More over the Conical filter is very difficult to maintain. It has to be covered with Polythene cover on every water wash inside the bonnet. And should not be started with covering it. We our self have to take care of it. More over you cannot use on rainy days as it can spoil the filter.
How about Green cotton? Should it be maintained the same way?

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Replacement filter and Performance Filter will give you the same FE PROVIDED you drive the same way with them as you are driving without them PERIOD.
Exactly! My friends have it and no change in FE at all.
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Old 26th September 2008, 19:00   #18
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Stock Air Filter Rs.400 , K&N Rs.4000 so cost of 10 Stock filters? You do the Math.

Most of the aftermarket filters don't filter well and the clean and use again method is annoying as you have wash and properly oil them for effective filteration every 3-5k kms.

Change your stock filter every 5k kms and be happy.
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Old 27th September 2008, 11:34   #19
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Quote:
Originally Posted by ashok_lat View Post
More over the Conical filter is very difficult to maintain. It has to be covered with Polythene cover on every water wash inside the bonnet. And should not be started with covering it.
True, i have seen many twisted filters around and read somewhere on the forum that somebody ended up with a crushed one too.

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We our self have to take care of it.
Not much of a trouble to wash it and re-oil it. Get somebody to do it for you and it will feel like a normal service where somebody replaces the stock-filter for you.

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More over you cannot use on rainy days as it can spoil the filter.
Ya! Only if it is popping out of your car's bonnet!!

On a serious note, its not like that, the KnN in my car is exposed from 2 sides in which one side where the filter is closely located to the opening and water can come in is through this opening in the wheel well, i have driven through foot deep waters with water comming in through that opening and the KnN sucking in air(not water) at full glory but nothing happened.
But this is just my car we are talking about.
Most others have their Conical fiters located safe and high inside the engine bay under the bonnet where there is no chance of water getting in except the water level is upto your windshield or you have an open sky facing bonnet scoop.
The rest have cold air intakes with pipings well routed only to get air from underneath the bumper or near the fender/apron, so again little or no chance of water seeping in.
so nothing like you cant use a conical/high flow filter on rainy days except if it is totally exposed.
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Old 27th September 2008, 11:43   #20
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Originally Posted by mura View Post
Stock Air Filter Rs.400 , K&N Rs.4000 so cost of 10 Stock filters? You do the Math.

Change your stock filter every 5k kms and be happy.
Okay lets do a little math here then.

As per you, change stock air filter every 5000kms. Rs.400 for every 5000kms
Translates to Rs 4000 spent on air-filters by the time the car has done 50,000kms.

The KnN for Rs. 4000 will last for more than 1,00,000Kms.Plus the gain in performance, little but still is a gain.
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Old 27th September 2008, 14:00   #21
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Originally Posted by abhik View Post
Okay lets do a little math here then.

As per you, change stock air filter every 5000kms. Rs.400 for every 5000kms
Translates to Rs 4000 spent on air-filters by the time the car has done 50,000kms.

The KnN for Rs. 4000 will last for more than 1,00,000Kms.Plus the gain in performance, little but still is a gain.
I already said most of the aftermarket filters don't filter as well as the factory filters.

As far as i have seen the aftermarket filters don't offer ANY noticeable gain in performance for small displacement Indian cars.

I have seen well known aftermarket filters fall to pieces in 40k kms even though they were properly maintained.
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Old 28th September 2008, 13:01   #22
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Hi KSM,

It might interest you to note that I replaced the stock air filter on my M800 and then cut up the housing. as in left the top plate and the bottom plate and a few locations for the latches to latch on and the rest got dis-membered. in effect giving the filter a 360 Degree suction capability. It is really good as the gurus on this forum said a tad better than a standard replacement filter.

It is a fairly easy job on the M800 and in the event of a mess up the housing is not too expensive anyways !! Not sure about the complexity involved in a OHC VTECH though , just another thought which might interest you !!!

Good luck buddy and drive safe !!

Srinivas
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Old 29th September 2008, 11:51   #23
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Remember that a true CAI needs to be shielded from the engine compartment's heat too.
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Old 29th September 2008, 11:55   #24
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How would one do that exactly? Any one good you know of in mumbai?

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Remember that a true CAI needs to be shielded from the engine compartment's heat too.
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Old 29th September 2008, 12:32   #25
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Originally Posted by KSM-Vtec View Post
How would one do that exactly? Any one good you know of in mumbai?
The DIY Kind:-
*Locate a spot where there is space in the engine bay for double the size of your aftermarket conical filter. Make sure this space is as far off or protected from the engine block and headers but ensure that piping can be routed with ease.
*Maximum times that space would be where your stock air-box is/was. In some cases people also relocate the battery to the boot to make space for an aftermarket air-box or filter.
*Once the space is sorted out, get an air-box fabricated for the filter. Make sure it is larger than the filter itself and can pull in maximum air in good quantity. DO NOT make it tight fit types. If you have the space then go for the largest box you can fit-in there.
*Get the plumbing done(piping, hosing etc.) If possible get heatshield wraps to cover these pipings and air-box to further protect them from heat.
*Make sure the intake piping is near the bumper base or any inlet for air directly from outside. Ensure this piping is protected from direct intake of water either from rain or driving in flooded areas or any other possible source.

The After-Market Solution:-
*Get hold of a CAI system from Green or KnN or PiperCross from a tuner in your city. Jignesh from Viper Performance is your man in Mumbai.
*They are well designed and serve the purpose well.
*No hassels of designing an air-box, planing for space and routing cold-air, everything is a simple fit or atleast much less of a hassle.

The Cost-Effective Way:-
*Get rid of the stock air-box, retain the stock intake pipe and stick the filter there.
*Get an after-market intake pipe made and routed to near the bumper or any place in the engine bay where the car gets ample cold air and stick the filter there.
Caution: Cost effective will not necessarily be Performance effetive.

Last edited by abhik : 29th September 2008 at 12:34.
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