A couple weeks ago I had a meeting with a couple guys from Wix. It is one part of my job, to meet with parts manufacturers to discuss new products, recalls, etc...
We got on the subject of Wix racing filters and I mentioned that I run one on my boat. The guy told me that the 2 main differences between a normal replacement oil filter and the racing filter is that the racing filter is designed to flow more gallons per minute and it has a higher burst pressure due to the heavy duty construction. He cautioned that to gain GPM flow the engineers had to give up some filtration quality. He point-blank did not recommend using a racing filter unless it was a race-only boat that gets an oil change after each race.
So .... I went home and changed my oil, using a "regular" Wix filter.
Food for thought .