Originally Posted by BLM

Yep. Rubbin like a mofo. Apparently ARK is in the process of fabricating their own hfc specifically to be paired with the CBE to eliminate the hiss/whistle noise.

I do like the exhaust a lot. Well made, nice sound at WOT and pretty quite while cruising (though it's a bit deep and loud while cruising around 2000 rpm). Having a hfc that eliminates the hiss would make it perfect IMO.