I removed the air filter and I delivered it to an ACVW guru. He worked on a VW dealer for more then 20 years as mechanic chief. He putted the air filter in a liquid for
24 hours and cleaned it. A lot of dirt comes out of the top part of the filter. The paint got a lot of bubbles. Not the factory inner paint but the outside paint job I did. He was the person who told me about this tip This is one of the best improvements I made on my beetle to improve the performance. The idle speed dropped between 50 to 100 rpm and the acceleration is stronger. It also works smoother and I only feel a tiny flat spot. The engine drops less rpm when I shift. Now I know why some people change to paper filter and feel a big difference. I never read a post about this issue here?but I also could miss it.
Joao
72 Super 1302