Review on 🚀 High Performance K&N Engine Air Filter: Premium, Washable Replacement Filter for 2011-2019 BMW V6/V8/L6 (Including M2 coupe, M3, M4, M5, M6, M6 coupe) - Model: 33-2488 by Matthew Aiono

not bad opens the inlet! Remove factory filters and carbon filters. Install them. You can feel better throttle response. One thing I could warn you about is that after reading and hearing on the forums about oil getting into the intake and causing big gremlins, I opened the box and took it out of the plastic bag to get rid of this oversaturated oil found from the factory. I soaked them in dish soap and warm water, rinsed very well and let them dry overnight before installing them and have been using them for over a month with no problems. The oil will be pink and some oil will remain after soaking. After researching this, I decided the problem was real and costly. You can remove even more oil and then buy it and spray the required amount. Do it right if you want. Next time I brush them I spray just enough to evenly cover them. K&N needs to solve this problem. They will be soaked in oil when you get them. just know This is a great product, but you should be aware of a potential issue.