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cone air filters could be rubbish!

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They just suck in hot air, don't they?
I might be goimg back to a standard air box (plus I like that orange tape round it)
 
I bought one of them last year but when i actually got to fitting it i came to the same conclusion..you can't just take off the standard airbox and pop the cone on instead..it will need isolating from engine heat and fitting some additional air intake ducts/hoses..it seemed a bit too much for me at that time as i had more important stuff to do..so i ended up with getting a K&N panel filter instead..
 
I don't think cone filters are rubbish, the just need some thought with positioning. A turbo car will be worst affected by hot air (and will also generally have higher under bonnet temps anyway) so it becomes much more ciritcal, but NA cars seem much more tolerant. For what it's worth, my old lux engine had a cone which would draw air from inside the engine bay and I never noticed any subjective loss of power when the under bonnet temps rose.
Best regards,
Peter
 
My red tuned turbo has a cone filter and it runs great,there are heat dams available and headlight cover air intakes available but it runs fine without these and i have run it on circuit and on stinking hot days in traffic,so no problem with them from my view[:)]
 
Beaky has a had a cylindrical filter behind the rad (where the original Turbo air box was) and subsequently a cone filter behind the nearside headlamp. I can't say I notice a dramatic, or indeed any change moving to behind the headlamp which should be better.

Some have even considered moving the filter into the front wing. I remain to be convinced as the real advantage of such.
 
Having a cone in place of the standard airbox on a Turbo is not the best place in the engine bay with regards to a cool intake but once the car is moving there is plenty of airflow. Much better is to have it behind the offside headlamp, possibly with a heatshield between it and the rest of the engine bay.

On a stupidly modified car (like mine) the standard airbox is just so restrictive that the J pipe between the turbo and the airbox is under a huge vacuum and literally sucks oil out of the sump through the breather pipe that is situated there. When this was replaced by a cone filter and MAF the vacuum was reduced considerably and extra boost was immediately available due to less restriction.

In conclusion (see how I waffle [8|]) they are not always rubbish, but I would never fit one to a N/A car as it's just not worth the minor increase - if any.
 
Well, I did say that they could be rubbish.
Even positioning behind a vented front panel, I remain dubious.
As for heat shielding, etc, well isn't that what the factory did with the black container it comes in?
 
There is a documented mod to the airbox by making 3 three holes/15 smaller ones claimed to improve flow and performance. Anyone tried this mod and what's the conclusion?
 
my S2n has a cone filter fitted in front of the radiator panel to one side of the rad. It picks up cold air from under the badge panel. I cannot see it so I guess I'd have to remove the badge panel to se it. I'll try get a picture tomorrow.I shouls say my car is seriously quick and pickup is instant and continuous at any speed revs right up through the range. I can only compare it with my previous S2 which had nothing like the urgency and speed of this beast.
 
ORIGINAL: charles.y

There is a documented mod to the airbox by making 3 three holes/15 smaller ones claimed to improve flow and performance. Anyone tried this mod and what's the conclusion?

There was also a mod to drill a hole in the pick up pipe from the wheel arch. This was to stop the engine sucking in water if you drove through a flood.

Do put a cone on a n/a car. The sound is worth it. [:D]
 
I have been looking into this for years now, my personal conclusion is that Tony is correct on Turbos they deffinitely help, on N/As john is right they sound great, but wont give masses of improvement but on modded S2s they are deffinitely worth it especially with a chip and decat. One thing that puzzles me about the heat and drawing hot air argument is that on cars with the air drawn from outside the air still passes through the inlet tubes and the filter box which get pretty hot so I think once a car is moving theres minimal difference between air intake temps from a cone or standard boxed filter.
Best regards Simon
 
I am going to fit a cone filter to my S2, its location in front of the radiator should only draw in cold
air. I am not exopecting a much in terms of power, but better breathing is always good. I have run a
K&N panel filter with drilled airbox on the 968 and it sounds better, but as for extra performance I am
unsure.

There was a stall at Ragley that had some cone filters for the 944's, they did not have much else on the
stall, a couple of strut braces and that was it, can anyone remember the name of the place as I have lost
the info I had on them, D'oh.

Thanks
 
Hi Peter,
Can't comment on who did the filters at Ragley but I would recommend going for a kit that has a loooooong intake length. I have the J pipe from Simon and it's perfect, any shorter and you will loose torque that you will feel (I experimented extensively with drain pipe first which is just the right diameter [:)]).
Best regards,
Peter
 

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