# What Bov is this?? **URL:** \ **Category:** SON240sx Off Topic\ **Created:** [February 4, 2008, 9:31pm UTC](https://forums.speedlife.net/t/what-bov-is-this/112943 "2008-02-04T21:31:23Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [February 5, 2008, 3:04pm UTC](https://forums.speedlife.net/t/what-bov-is-this/112943/19 "2008-02-05T15:04:34Z")
> [@callouts to get back in the loop](https://forums.speedlife.net/t/callouts-to-get-back-in-the-loop/15754/25): > > please don’t give tech advice… your talking out your ass… > > 1. BOV’s don’t work under vacuum, they work on over pressure differential. > 2. no BOV WILL damage your turbo, i) pressure wave acts to stall the compressor impeller causing a sever offset moment load on the shaft this can burn and ‘ovalize’ wet bushings and crack inner races. ii) the compressor impeller can twist loose by backing off the top cap nut causing both an impalace in the CHRA and turbo ‘grenading’. Just because you may not have been able to visually see, damage on yours does not mean it does not exist and is not a very REAL threat. then can you please tell me why i hear my bov when i am at 4-5 vacuum? and can you also expalin how my turbo is still going? and with no problems, ALSO id like to say i was not GIVING tech advice at all. i was just going on personal experience. im not a licensed mechanic, therefore i will never be able to give advice only when i know im right. get your balls out of the vice and stop tryin to be a big man. next time i see you i can show you and you can CLEARLY hear my bov going off… how the fuck am i giving tech advice on someone tryin to find out what bov makes that noise?? “well you see here, first you get some duct tape, then you wrap it around your exhaust mani…” --- _[View the full topic](https://forums.speedlife.net/t/what-bov-is-this/112943)._