Switch to the Denso Iridium plugs, they've got a much lower mis-fire rate than the NGK's. Less mis-firing means less power loss to the wheels. Also, if you're just considering a drop-in air filter, look at a Green, better mesh than the K&N and all stainless steel parts instead of aluminum. If your going to buy a filter with a lifetime warrantee, you want it to last the life of your car. Check out
www.greenfilterusa.com for some tech info. e-mail me if you want some good info on spark plugs.
4theson@direcpc.com