orangejunkie wrote:Although i`ve been registered on here for a few years now, i`ve not posted too often.
However this thread has got my interest so i thought i would share my views on it.
Running a small tuning business with a friend, you can imagine we get asked this question a lot!
I have always traditionally been against Bovs.
We get on very well with a well known Turbo company who have been helpful when i have approached them on this topic.
Their general view on it was that it largely depends on the boost pressure that was being run.
His suggestion was, below this you`re ok, although its not
Who knows.
I had an rs white lightning it loved being bov
(dumpvalve) free but it was the 90's so i fitted one coz it was cool init lol .. my r21 turbo hated being bov free at 1.3bar ... my supra loved it at 1.1 bar .. my mr2 ct20b hated it at 1.1bar ... what im saying is every cars different .... if your running low boost you might get some extra performance on your gear shifts not having one ... high boost its going to chatter like f/ck ... hurting your turbo ... each to there own on this topic do whats right for your cars performance 
Edit
.. for the record no bov does not cause stall ... the compressed air in the system once the throttle snaps shut had no ware to go but back past the compressor blades ... making that cool chatter sound ... not great for the turbo but also not a deal breaker ... you can go years n years bov free ... like i said what ever works for you 
