best air filter for 370bhp?

[andyg plym]

ok,so i have experimented with:

stock s2 airbox-with massive holes drilled in for more flow,but not convinced it is upto this much hp

k+n small cone-heatsink city

currently using a BMC airbox which sounds lush and i have raved about for years (but on 280-290bhp previous s2's) but wonder if this is not upto the job

before anyone says, i have an excellent airfeed taken from oil coller ducting (dont forget i own the 'bacofoil express'

So what would we all suggest? Dont fancy forking out on an rs2 airbox,maybe a larger cone? ITG?

[K Simmonds]

The best soloution IMO is to remove the front section of inner wing on the exhaust side and locate a massive (non oily) cone filter as far away from the turbo as possiable then sheild it properly. All in all this is a lot of work, not easily reversable and probably not worth it for RS2+ spec. I don't see a modified ABY airbox being restrictive at this power level, though an RS2 one would be preferable.

[Ross]

I run an RS2 airbox with a Pipercross foam filter. I previously had the dahlback cone kit on the car.

Swapping back to the airbox (with paper filter first) felt a little restricted and too quiet for my liking; the cone was a bit loud and non-stock looking for me. Fitting the foam filter was the perfect comprimise - I got back the induction noise but at 1/2 volume and it felt a bit pokier again.

At the time it was running 370hp. Now I'm pushing ~440 and still using the airbox setup.

[andyg plym]

hmm,interesting ross.

i have an aby box with most of the front covered in large diametre holes complete with k+n panel filter. Statitically would this be the better of the 3?

i love my bmc for the noise/no heat sink etc but wonder if its restricting it