Hi Mike
I also only have a single hard line from the tank to the engine, I have my swirl pot in the tank and a reg right next to the 044, it is still loud, but can only just hear it at idle
<img src="http://www.clubcobra.com/photopost/data/500/200903040013.jpg" />
http://www.clubcobra.com/photopost/d...0903040015.jpg