well thats not good if it decreases back preasure u want to increase it lol
and yesbills does have one just kinda hard to get im thinkin toomey or power core
i run a bills silencer on my CPI header and it sounds sickkk. i got mine off ebay but i havent seen any lately.. youd have to call the company to get ahold of one bc their website gives nothing about them for the blasters