sound w/o aptmophersic vent comprmise

[azn2nr]

i just remembered a little while back at a local car show a guy showed up with a dsm (eclipse) first gen and before he even got there you could hear his bov from a mile away. when he poped his hood he had a greddy type s bov but he didnt have a trumpet on it in fact it had a silicone hose attached that lead back to the intake after the maf much like our settup. even though that particular valve comes as a spring valve you can take the spring out and it has vacum adaptors on it so that it can be operated that way. you just need an adaptor plate which goes for about 20 bucks on ebay to put on your stock silicone hose where the stock valve is now and some custom molded silicone to go back to the intake or if you can make the stock stuff work you can do that too.
theres a pic on this auction that shows what i mean and the sound that his made.
http://cgi.ebay.com/ebaymotors/ws/eBayI ... gory=33742

[FrmRgz2Rchz]

Remove the spring from the bov? Are you sure he wasn't running +20lbs and that is why it was loud?

[azn2nr]

he was only running a stock level of boost. 12 lbs max i do belive. at one point later on after another show he actualy blew the spring out. but the greddy valve acts as the most universal valve on the market. it can work as a spring check valve with a trumpet or a vac valve(like ours) with a recirc line. that uses manifold vacume to raise the piston whenever there is vacume and uses pressure to keep it shut. no mater which way it is used it is pretty loud even as a recirc. and its the only valve i know of or seen that can be used with soft pipe.