What Air Filter to use!!

[DJ-ROY]

two welded bends .

[Ski]

BTW, why is the bend needed and not just put the filter direct onto the maf ? Purly for more cold air?

[Jeffer]

Is someone running an Apexi filter on his S2? I'd like to know what dimension are available........
I think i need a 70 mm anschluss......

[Bibby]

Ski, filters like the K&N I use have an opening filter on the face of the filter as well as the circumference of the cone/cylinder.

By having this facing the airflow you're maximising intake capability.

[Ski]

I have to say the noise is too loud now with this filter. I mean.. i like the tsss tsss sound but this is TOO loud.

I have a 280 or 290 chip with a harder spring in WG and its too darn loud.

I guess i will get an exhaust to overpower it

[RustyNut]

Cheers for the info guys. Do we have dimension spec and prices for the Apexi filter?

R.

[euans2]

Does anyone know how the Pipercross Viper induction kits will work on the S2 ?

I ask as I have one lying around. It's not specifically for an S2 but with a few modifications it wil fit

[Ski]

I have a pipercross on mine of some sort...

does anyone know where i can get some heat resistant material? the stuff you wrap your pipes with. My shield sux and i would like to reenforce it as its just plain metal atm.

need about 1m sqare and it should be flexible.

[ericd]

After trying out a few filters & failing to get any reliable source of tech spec for Apexi filters, I finally ended up with a Type B (up to 350HP) Universal filter from Quikshift racing, they also do the Type D which covers up to 600hp for those who need it ...

Seems to have made a noticable difference to performance; more free revving and generally feels a little more responsive/faster. Haven't seen many other people using them but seems like a good quality piece of kit (around £50 delivered), got all my questions answered within a day when I asked them about spec/capability, very helpful and prompt service.

https://www.quikshiftracing.co.uk

N.C.T.S. other than I've used them, you can get their stuff through demon-tweeks and a few others , but you can order straight from them & it's cheaper..

[BrianSmith_S2]

Halfords universal cone filter

I thought i would try out a cone filter to see what difference it made to the engine sound, so got this universal jobby from halfords (comes in a brown cardboard/ripspeed box) for just £26.99 (Colour coded to the car) . The engine note is more raspy, and the woooooshy noises are very loud. not sure how long i can live with it, though for the money it was worth a try. Be warned though, although the filter element is red and appears ready for use it isnt, and needs oil applied.

As you can see i have just done a quick fitment, i.e. have not fully removed the lower filter housing assembly. And the heatshield was screwed to the top filter housing (My cars an ABY). What would you all recommend, can i fit the 3B heatshield around the filter and maf, or is it worth just making my own to protect these components .

[Sweeper]

My thoughts is that , if it doesn't pointed to the headligh and don't have a heat shield , it will perform worser than OEM AIR BOX

[karlblues2]

I thought i would try out a cone filter to see what difference it made to the engine sound, so got this universal jobby from halfords (comes in a brown cardboard/ripspeed box) for just £26.99 (Colour coded to the car) . The engine note is more raspy, and the woooooshy noises are very loud. not sure how long i can live with it, though for the money it was worth a try. Be warned though, although the filter element is red and appears ready for use it isnt, and needs oil applied.

As you can see i have just done a quick fitment, i.e. have not fully removed the lower filter housing assembly. And the heatshield was screwed to the top filter housing (My cars an ABY). What would you all recommend, can i fit the 3B heatshield around the filter and maf, or is it worth just making my own to protect these components .

Brian
Won't that just be sucking warm ambient air in from the engine bay now as opposed to cooler air from the front of the car
Cheers
Karl
Oz

[quattronutter]

i found that the cone will work worse than standard air box on a hot day,however with colder temperatures i think the cone may have a slight advantage...all down to heatsoak i guess...

[karlblues2]

My thoughts is that , if it doesn't pointed to the headligh and don't have a heat shield , it will perform worser than OEM AIR BOX

Yep. Vadim you beat me to it
Cheers
Karl
Oz

[BrianSmith_S2]

your probably right, although it seemed ok running tonight (coolish outside temps). i think cos engine sound is more vocal your brain tells you performance is ok too. i definitly need to sort out a heat shield though, if only to protect the filter and maf, but sucking in hot air is bad too. will have more room to fit an elbow from the maf when the lower filter box is removed. will keep you posted on my results.

not sure also on long term filtering performance of such a system over normal paper filter??