Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: In love.

I love this air filter. I still have everything stock on my 2000 Focus. When I dropped this baby in my air box and threw the OEM one out my car grew this pleasant growl to it. It has a nice tuned roar to it now whenever I drive. I'm pretty sure people can tell and they probably think I have something else under the hood. It also really compliments my resonated muffler tip:) You'll never waste money when you go K&N.