Hi guys I love the sound of my 12valve , I did a single stack and that sounds great ... seems that my big honking air cleaner makes more sound inside the cab of my truck than the stack .
I would like to control that sound but still keep the same air flow .
Any one use any type insolation or pading in that firewall area or build a insolated box ...

Thanks Guys

P.S I'm working on posting pics of my stack ...

Greg