How many BOV's? New to turbo
 

Sorry to ask such a stupid question, I just got my RX7 and want a blow off valve. A buddy of mine was telling I need two because it is twin turbo. Is this true or can I use just one??? Sorry this is my first turbo car, I'd appreciate any help Thanks in advance

Most use one aftermarket one and keep the stock one in its original location. You don't need two.

can u upgrade both BOVs? Is it better to or is it not worth it?

You can have 2 BOVs, but it really isnt needed. 2 BOVs can give you a double woosh if set on different pressures to go off. But one is enough if you are practical.

Thanks for your help!