bov sizing/setup consids - which one

[inissane]

I am looking to fit a bov to stop compressor surge on an rb20, will be fitted within one or two feet of custom piping from the throttle and be plumbed back post afm. Boost 9-13psi but in the future with a larger turbo may run up to say 20psi.

2.5" piping, stock throttle/plenum, taking this into account I was wondering what size/type bov would best suit my application?

Its just that it seems a bit like a lottery when buying an aftermarket bov whether it will run smoothly, not stall, cause extra lag cause it is too large diameter/spring tension differences (though these are often adjustable). I am currently eyeing the greddy type rs and plumbing back from the nozzle. I dont have a stock bov with the engine but dont place much value on bling or sound factor so if there is a stock one off any car thatll do the job that would be fine.

PS - I hope this doesnt turn into a what bov do you have or which one sounds the best thread :wassup:

cheers