Might should have went in tech chat. I included a link to the website for your viewing pleasure. Does anyone have any experience with these? They claim 5HP, is that realistic (I understand everyone dyno is different, temp's effect dyno, elevation and so forth)? The price for a 2nd Gen is approx. 164.00, but since it is reusable then it "should" pay for itself in the short run if you currently buy "expensive" filters. I was informed about this from a CAT mechanic and wanted to see what everyone here thought! Not my product nor is it endorsed by me so feel free to say what you want!