I have been looking everywhere for this k&n Well I got it on my truck about three weeks ago. I do notice the change in how it is running much better. But I have a few other things added as well. I am pleased with my pruchase and the price was unreal. What a real value. Great shipping time. Product was as stated. I am very pleased. 100% HAPPY.Updated 1/30/13 it is working very well on my chevy ssr. Better gas mileage.Updated 2/13/2013 I took a drive about 350 miles and the gas mileage was great.