Whilst I contemplate which road to go down to release them extra ponies from the old wagon I might as well replace the filter with something half decent, what's the general choice of members, pipercross/K&N, or something else.
Should add, 2001 WRX Wagon.

 

Cosworth

 

I,ve used K+N on my Scoobs over the last 12 years with no problems. Steve

 

I was advised to go for the subaru sti panel filter , not sure if its still the one to go for so many around now

 

K&N for me.

 

I've only just got mine but have always used k&n panel filters, got one in it already lol, i went off cone filters as my last car lost power due to having one (heat soak) so for the money i don't think you can go wrong, but i would go on the k&n website get the product number for the filter and put it into ebay, works out a lot cheaper.

HTH

 

Cosworth here!!

 

Green

 

Your standard set up will take up to 400 bhp. The recommended ones are

K&N
Cosworth
Green

 

+1 the Green one is good and the K&N.I have not used a cosworth one but they do get good reviews.SJ.

 

K&N

 

I use a k&n panel, but after nearly three years and a few cleans i think i might try something else and was going to look at a green or cosworth just because i like a change, my k&n is fine, any of the three as mentioned are good filters