I'm sue lots of people will post to help you out here.
I personally have a millteck which I like lots and also was on group buy so great price
I liked GTT tunings experiments with back pressure testing where they found the
JCW to be worse than stock in some cases.. not sure if that was the old version I cant find the thread
Helo anybody??
The only other thing I heard is something about the baffles inside the
JCW coming apart after a while which Im sure isn't great. But lovley looking tips tho