I've been trying to figure out how to make a higher pitched BOV attachment for our FD and some FC stock BOVs. I found this stuff at a volvo site. Pretty cool stuff for those that need a little schooling on BOVs and such.
It may not belong in this forum, but I plan on sharing my results when I get the perfect sound.
http://www.turbobricks.org/cbv_bov.html

 

hopefully we'll have a group buy for those of us who can't resist being attention ******

 

nice bit of info for people who will use the "search" function.

also....did anyone notice the date that was written??