The cusco extractor should be in 4-1, and got a ball on the bottom, cusco mark on it, well, quiet nice price, althought it fit to supercharger, actually it do fit to 16v, if 20v have to mod a bit to fit it in.
I know this question might have been asked many times but i just want to make it clear coz many people are having many boost pressure set for their E9. So, i was wondering what is the...