Had this 2.7L Boxster come into the shop the other day on the tow truck. Engine started knocking, so the owner and a friend with some mechanical know how pulled the oil pan and apparently found chain tensioner material in the pan. This car had already had the LN bearing upgrade on the IMS, so we were confident that was not the issue. I thought tensioner pad material in the pan a bit intriguing, but they wanted to go ahead …