[stupica1]

i really haven't noticed a difference in any filter i've used (K&N, ractive and that foam one from FSWERKS)...hell i've even ran my car with a towel ductaped to my MAF housing and it worked just as well as anything else. Its all on personal preference really.

But if you are thinking of throw an air intake on, you wont see any difference in gas mileage until you upgrade your exhaust as well.

I also drive 50+ kms to work one way and even with the air intake, exhaust, new plugs wire ect... i really didnt see a great increase in gas mileage. But thats just my $0.02

But! if you really do wanna save of gas, buy a vacuum gauge and follow that. I found that helped me out for getting a couple extra kms..another awesome tip is when you're filling up at the pump. once the pump stops...sqeeze about another 3 or 4 dollars in and you'll get a lot of extra kms before your gas gauge even moves off the full mark. I've gotten an extra 90 kms before my needle even moved off the full mark before just by topping up that little extra.