fattb

iTrader: (1)

Any thoughts on which is the better filtration and air flow ?

I currently have the STI one but noticed the green is a bit cheaper, provided this is the same one some of you use

Waxacar Green Performance Air Filters

harvey

iTrader: (48)

The filtration from the STi Filter is very good, the best of a number of filters I experimented with. It is disposable after x,000 miles.
The O/E air filter also has good filtration ability and is a lot cheaper and also disposable.
On tests I did, I found a spread of 2 bhp between the highest and lowest power output on a number of pannel filters but the filtration ability was in reverse order. The highest power readings came from an HKS Green Foam pannel filter but it also let through the biggest sand particles and more of them. the STi had the best filtration and lowest power output. For 2 bhp I would rather have good filtration and settled for K+N lightly oiled pannel filters which can be cleaned and reused thus making them economical in service.

magicgreg

Another shout for the K&N, thats what I've gone for.

G