Charge Relief Valve (BOV)

[Glenn Butcher]

Here is a pic of the standard BOV on a 3rd gen. RX-7

[j9fd3s]

actually thats the charge relief valve, its job is to open at about 4000 rpms. they do that to help the second turbo spin, son when they open the doors there isnt a drop/flat spot

the bov is a tad in front of that, the are calling the air bypass valve in the pic

mike