As above, I've just stripped down/cleaned/painted my HKS Racing BOV and while at it I removed the recirc adapter. I was wondering if there are any replacement fins for this particular BOV or whether it was just meant to be left totally open.
If anyone has one handy, measuring the outer diameter of the fin would be great. I understand that the fins have little tabs at the top and bottom so that you put it on the right way, the racing BOV doesn't seem to have these tabs so not sure if it is a total non-starter.
Lastly, does anyone with the racing variant have any sort of fin in theirs?