i have a 94 wrx with an arc induction kit does anyone know where to get a replacement filter from ?
what induction kits perform well is it worth just buying another sort ?

 

ttt

 

I've never heard of Arc, but the general opinion on here is that, unless you're running big (380+) power and/or have sorted out a good cold air feed then I/K's can be more trouble than they're worth. If they're not fed cold air then they may actually reduce engine power, and if they haven't been fitted well with good supporting brackets they can vibrate the MAF to bits.

Don't know if it's feasable to use a different filter on the Arc housing, but it might be worth trying such as a K&N for fit if you can't find any Arc products. I believe Green will make any filter you like to any specification at a price, so try them if you get no luck elsewhere.