Atmosphere or divert blow off valve?

Which is the best to use? I'd much rather use an atmospheric as its simpler and doesnt have to be routed back into the system somewhere, but does this reduce the performance in comparison to a diverter. Im also not to keen on the silly noises some of them make!

there are many many threads on this topic , do NOT use atmospheric valves on 20vt engines. if you want an upgrade get a forge split r one. you can turn off the annoying phssss noise as it does get mega annoying after a while !!!!!!!

Stick with the Forge 007 or 008p.

As said above don't use atmospheric.

I used an atmospheric on my car, was mapped with it on a stand alone managment, was ok nothing to major reguarding the sound..

if you using oem ecu set up then use Forge 007 or 008p divert valve. on standalone ecu use what u want. delete n75 delete hockey puck. fit oilcatch tank let engine breathe no yellow gung going back into intake. have you you seen what a oil catch tank catches? looks like baby puke lol.  make your own silicon tip and fit a  atmospheric dump valve on cold side




but you gunna get oppppshhhh sound

You wanted the chav sound Pete though

i dont want this going into my new turbo   yep thats what a oil catch tank has catched  lol i love chav woooshhhhhhhh