QikSmurf Member 246 Member For: 20y 9m 12d Posted 17/04/04 10:25 PM Share Posted 17/04/04 10:25 PM Hi Guys,This question must have come up before but, what are blow off valves and what is their purpose in life?I was asked yesterday by a colleage of mine, whether my XR6T had a B.O.V. fitted?I know a lot of Riced up cars make a "sneezing" sound between gear changes. Is this the result of having a B.O.V. fitted?My final question is, apart from the sound do B.O.V's serve any real performance function or are they just a wank?Thanks in advance and sorry if its been discussed a million times before 1 Link to comment Share on other sites More sharing options...
Buf-Phoon loitering with intent Lifetime Members 13,318 Member For: 20y 8m 5d Gender: Male Location: Zombie Birdhouse Posted 17/04/04 11:52 PM Share Posted 17/04/04 11:52 PM QiksmurfAll Ts have a blow off valve as standard.From memory an upgraded BOV is not required until you are making serious power eg phase 3 etc.Ricer BOVs often discharge into the atmosphere and as such are illegal.A search will provide further detail.CheersWT Link to comment Share on other sites More sharing options...
ExAreSix TRAITOR Member 1,063 Member For: 21y 6m 5d Gender: Male Location: Townsville, NQ Posted 18/04/04 12:27 AM Share Posted 18/04/04 12:27 AM When you back off the throttle and close your throttle body, the intake air suddenly stops. A BOV allows this air to expel from the intake. If it was not expelled, the back pressure would cause the turbo to stop spinning. This sudden halt can cause damage to the turbo, and also loss of boost. Link to comment Share on other sites More sharing options...
turb06 Dark Knight Mafia Member No. - 666 Member 3,667 Member For: 21y 1m 30d Location: Toowoomba Posted 18/04/04 03:57 AM Share Posted 18/04/04 03:57 AM The xr6t BOV will make a sound, but it is nothing like you hear on the ricers, if your T is an auto you wont hear it that often though, cant speak for a manual. But they do good things for preserving the life of your turbo. The xr6t unit is known as a plumb back style BOV. Link to comment Share on other sites More sharing options...
CJF077 The Noble Leader Administrator 4,785 Member For: 21y 6m 12d Gender: Male Location: Sydney Australia Posted 18/04/04 04:09 AM Share Posted 18/04/04 04:09 AM I got a BOV In my car.. the normal bosch one isnt that loud.. not that you need it to be. I have a GFB one and love the noise.. certainly lets people know its a turbo! :lol: 1 Link to comment Share on other sites More sharing options...
Cro Flower Power Lifetime Members 6,114 Member For: 21y 6m 14d Gender: Male Location: Sydney Posted 18/04/04 04:52 AM Share Posted 18/04/04 04:52 AM I got a BOV In my car.. the normal bosch one isnt that loud.. not that you need it to be. I have a GFB one and love the noise.. certainly lets people know its a turbo! :lol:Actually the standard BOV is loud, I've made mine go off louder than most other after market ones. Link to comment Share on other sites More sharing options...
ExAreSix TRAITOR Member 1,063 Member For: 21y 6m 5d Gender: Male Location: Townsville, NQ Posted 18/04/04 05:00 AM Share Posted 18/04/04 05:00 AM Actually the standard BOV is loud, I've made mine go off louder than most other after market ones. Indeed. Mine is quite loud now that it's dealing with 10psi.Since I've upped the boost, I've had this conversation on two occassions:"When did you get a BOV?""It's always had a BOV""Oh, when did you put the new one on?""New one? It's the factory BOV."Yes, quite loud now. 1 Link to comment Share on other sites More sharing options...
Worpor Member 467 Member For: 20y 2m 9d Location: Perth Posted 18/04/04 05:38 AM Share Posted 18/04/04 05:38 AM With PhaseII mine is very loud. [Auto] Sounds great Link to comment Share on other sites More sharing options...
Blown BA In Your Face Member 6,195 Member For: 21y 1m 15d Gender: Male Location: Peninsula Posted 18/04/04 05:44 AM Share Posted 18/04/04 05:44 AM Take no offence guys but soon we'll have sneeze buckets everywhere Link to comment Share on other sites More sharing options...
andyturbo Member 500 Member For: 20y 1m 9d Gender: Male Posted 18/04/04 06:20 AM Share Posted 18/04/04 06:20 AM xr6t's have a blow off valve? when we took one for a test drive I certanly couldn't here one Link to comment Share on other sites More sharing options...
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