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Old 9th June 2008, 19:37   #76
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ok so lets talk about bov, blow off valve is the one that makes the sound (hisssssssss) while shifting gears and when the throttle is cut! the back pressure created is pushed out rite, so i just want the sound just that nothing else screw the performance how do i get that done ?
1. is replacing bov easier than the turbo (inlet and oulet valve diameter problems )?
2. what brand should i get i get? ( i did spot a BOV from greedy)
3. BOV must me less expensive than the turbo install ?
( the best hiss i ever heard was from the petes SKODA Vrs 300 bhp+ at our motorshow)
this is all RELATED to the SWIFT Vdi
(and the turbo noise is very loud for scorpio at hig revs but i cant hear no BOV hisss from it)
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Old 9th June 2008, 22:38   #77
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BOV is designed to keep the boost under control and this what make the hiss, when shifting, the pressure increse due the closing to throttle in petrol cars, but diesel that not the case.
So you can use BOV tuned to lower pressure so that at certain rev there is a pressure release ,but that will reduce the performance of the car...
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Old 10th June 2008, 00:12   #78
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A BOV does not keep boost under control. A watsegate does that. A BOV just lets out the already spooled up air on closing of the throttle body. Also avoids this high pressure air from flowing backwards towards the turbo.
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Old 10th June 2008, 02:21   #79
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And so bov if used on our stock normal aspirated diesel cars can cause TURBO LAG and a lot off it :-)
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Old 10th June 2008, 09:21   #80
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Now that would be a first also.
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Old 10th June 2008, 09:32   #81
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Quote:
Originally Posted by Team_Godspeed View Post
And so bov if used on our stock normal aspirated diesel cars can cause TURBO LAG and a lot off it :-)
Dude! You are waaay too confused. BOV does not cause lag!! In several threads u are looking for more Turbo lag!!! Why??

Pls understand the basics of turbo's before u set out to do any mods on your car. Google has a loot of links on this.

Video 2.0 - In Page Player

How Turbo Chargers Work
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Old 10th June 2008, 09:58   #82
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My mistake...Sorry for this miss type...wast gate is used to regulate pressure... and thats What I was thinking of... BOV does regulate the Back pressure..and thats what I meant can use some like wast gate modify to give hiss also but at performance compromise....

Or do what the trucker do, exhaust whistle....

Last edited by dinar : 10th June 2008 at 10:03.
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