In Reply to: Is a K&N Air filter worth the $ for a 93 525i? posted by Zippy on March 31, 2000 at 08:16:28:
: I installed the K&N drop in filter in both my cars. The cost ($45.00) each is well worth the expense. They can be cleaned, re-oiled and are guaranteed forever. The performance increase is minimal. I beats paying $20.00 every six months for a paper element filter.