It is true...in fact there are a number of aftermarket suppliers of spar
arrestors that will flow better than the stock units.
If your engine is bone stock, don't waste your money, the OEM units are
fine.
If you are into High Performance boating there are a lot better choices (all
USCG approved) than OEM

"mgg" wrote in message
. ..
I read recently that K&N makes a filter approved for marine engines that
has
better flow and filtration than my old aluminum flame arrestor. Is this
true, or just K&N hype?

Thanks.

--Mike