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Discussion Starter · #1 ·
Hi guys,

I'm pretty clued up when it comes to cosmetic mods, but for performance mods.. not a hope in the world!

I'm quite interested in getting a decent cone filter for my Corsa 1.0 LE, but have not the foggiest what to go for.

What would you guys recommend?

Cheers! ;)
 

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Ideally K&N, I would definitely NOT recommend the Halfords ones with the blue paper, not great quality and the rubber adaptor rings don't work very well when using the jubilee clip as they keep sliding out so the filter works loose.

Are you sure you want one though? I tried one on my wife's Land Rover and dyno testing showed it actually caused a tiny drop in power compared to running the stock oil bath. In our case it was assumed to be because the cone sat over the engine sucking in hot air above the exhaust manifold. The oil bath sits in the cool side of the engine bay sucking in cold air from the outside.

The other thing is the god awful whine it makes. It sounds great at first, sounds like you have a more powerful engine but that soon wears off after you have endured a few hundred motorway miles with the high pitched whistling and whining. :-(

We've reverted to stock filter now.
 

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Discussion Starter · #3 ·
mud4fun said:
Ideally K&N, I would definitely NOT recommend the Halfords ones with the blue paper, not great quality and the rubber adaptor rings don't work very well when using the jubilee clip as they keep sliding out so the filter works loose.

Are you sure you want one though? I tried one on my wife's Land Rover and dyno testing showed it actually caused a tiny drop in power compared to running the stock oil bath. In our case it was assumed to be because the cone sat over the engine sucking in hot air above the exhaust manifold. The oil bath sits in the cool side of the engine bay sucking in cold air from the outside.

The other thing is the god awful whine it makes. It sounds great at first, sounds like you have a more powerful engine but that soon wears off after you have endured a few hundred motorway miles with the high pitched whistling and whining. :-(

We've reverted to stock filter now.
Ah really? See, this is why I ask these things ;)

I've heard my mates on his golf, and it sounds beaaaautiful under heavy acceleration - granted I haven't heard it on a general drive. Just did some googling, a lot of people say they actually sound like a hoover after a while!!

Trying to arrange a booking with Powerflow Exhausts in Brighton to get the catback exhaust done..
 

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Discussion Starter · #5 ·
mud4fun said:
Video here of the Halfords one, with K&N oil hence the slightly purple colour:

http://mud4fun.com/2014/09/27/the-horrible-noise-of-a-paper-cone-filter-on-a-2-25-diesel/

You could try an induction kit though. They suck cool air from the front of the car while still having a more free flowing filter. The induction tract reduces alot of the noise. I had a K&N one on both my Astra sport and Escort many years ago.
I've been told something about 'hydrolocking' or something with induction kits?? Something about sucking in water from outside into the filter?
 

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LOL, you can hydraulically lock any engine with any filter if you get enough water in there. Generally not a problem with Land Rovers as they are so tall. However if you route your intake low down in something like a corsa then you are indeed more likely to suffer problems if you go fording more than a few inches of water.

Cones are quite cheap so you can always try one and see how you get on. The Corsa seems to have good noise insulation so it may work to reduce the annoying whine while leaving enough of the growl :)
 

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you could go for a K&N or pipercross panel filter if one is made maybe the same as a Corsa D. the problem I found with cone filter unless you have a good intake of cold air they can make maters worse, sucking in hot air from under the engine bay
 

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Discussion Starter · #8 ·
I haven't had a chance to get my nose in the engine bay yet this week, as I'm away in Leighton Buzzard on a conference.. From Googling, I'd imagine the air filter is on the left side of the engine, so would pick up some considerable hot air if it was converted to a cone filter..

How could I alleviate this problem? I.e. Is there a way of it sourcing cold air from somewhere else?
 

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If you are simply after more free flow then a decent panel filter in the stock housing is best as that already has the intake tract pulling cooler air (as Anthony suggested) however I suspect you are after the induction roar that you can only get with the cone. It is possible to make up a short extension to the cone using silicone hose and a bracket that would allow better positioning. I haven't got my car yet so can't check. I will be going with a K&N panel filter myself.
 

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tobywilsher said:
Hi guys,

I'm pretty clued up when it comes to cosmetic mods, but for performance mods.. not a hope in the world!

I'm quite interested in getting a decent cone filter for my Corsa 1.0 LE, but have not the foggiest what to go for.

What would you guys recommend?

Cheers! ;)
Not trying to be a moaner but honestly save your money it's a 1l corsa not a track car plus anything you do engine wise you'll void your warranty.
 

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Each to their own bluesam :) I certainly have no intention of doing anything to mine until the engine is well run in, probably 5-10K miles because the engine will loosen up and gain power once bedded in. The process took over 30K miles on my diesel pickup before it achieved maximum economy regularly.

I've also experienced warranty issues in the past so will make sure all the new car teething troubles are sorted first.

I will not be fitting a cone though as the noise they make is not good on long drives to work.
 

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I'm toying with the idea of fitting a cone filter to mine but have read mixed reviews about them, also if i fit one will it void the warranty with it being a new car and will it make a difference come servicing as i opted for the service plan (apologies for all the questions).
 

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A cone filter or even a free flow panel filter allows MORE air through because it traps LESS dirt due to much larger voids in mesh/paper. While it would be unlikely to cause an issue with most warranty claims if an engine problem occurred especially with combustion chamber/piston crowns/rings etc the filter could be blamed. Very unlikely though. However in my opinion not worth the risk considering the zero gains in power and massive increase in annoying noise. At least a new panel filter uses the cold air duct so allows more power. Cone sucks hot air in meaning less power.
 
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