# 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:** 17
**Author:** ![BAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bas/32/5540_2.png) [@BAS](https://forums.speedlife.net/u/BAS)\ **Post date:** [February 5, 2008, 2:54pm UTC](https://forums.speedlife.net/t/what-bov-is-this/112943/17 "2008-02-05T14:54:04Z")
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. > [@MB CLK DTM Cabriolet](https://forums.speedlife.net/t/mb-clk-dtm-cabriolet/15812/15): > > adjusting the bov will let it blow off premature, mine on soft will blow off at 3,4 vacumme but i dont really mind. it sounds good. > as for peter saying i have a loud ass car, that is cause i had it properly set when yuo heard it LOL! > > another thing, With NO blow off valve you will get that noise gaurente. > as for people saying no bov’s will fuck up your turbo. i have yet personally to see it happin, i ran for about 13 months or so with no bov, when i inspected my turbo, it had no shaft play and is still not leaking any fluids. and its also still running strong as crap. > > try no bov or making it REALLY stiff. --- _[View the full topic](https://forums.speedlife.net/t/what-bov-is-this/112943)._