Originally Posted By: SnPb
I used a Purolator Classic in my Ecotec and it looked fine when I removed it, but I think that the best filter for this application is the OEM AC PF457G made by Hengst. I have heard that most of the AC's available are no longer made by Hengst, but I purchased some on Amazon several months ago that were made by Hengst. The Hengst filter is made in the USA if that is important to you.
Depends on the dealer and/or store you buy from. Right now there are three different filters available from AC for the Ecotec 2.2.
If the dealer/store buys bulk, they sell a Fram made AC in a small plastic bag with a AC sticker on the bag, the PF 457GF.
They also have a short boxed version without the cap, they can either be the new Fram or the old Champion filter.
If the dealer stocks the PF458g then you can still get the Hengst in that package, a tall box with the Hengst and a new Cap.
I have some pics posted here somewhere, I'll try to find them and post back....Here are the pics I posted of the 457gf and the 458g.....
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1857813#Post1857813
That K&N is a great looking filter, but I can never find them in stock anywhere.