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import_racer · 08-20-2003, 03:10 PM

When I switch gears, and once I get into the next gear, the blow off valve sounds gets cut off. Is that normal? In videoclips, I hear the full sound of the blow off valve. With mine, when I shift, you hear the blow off valve but once I get into the next gear, it goes away. So if I shift quick, you only hear it for half a second or so.
_______

MarkJimenez99 · 08-20-2003, 03:21 PM

Check your blow off valve adjustment. Your BOV is probably set to "Hard" which means that you have to rev it really high to hear the full sound. My Greddy type-s bov adjusts by turning a screw.

liquid00meth · 08-20-2003, 03:43 PM

indeed, that would be true especially with a smaller turbo and/or low boost levels. Not as much pressure would build up, and if the BOV is set too tight it will shut early.

import_racer · 08-26-2003, 05:27 PM

Quote:

Originally posted by liquid00meth@Aug 20 2003, 02:43 PM
indeed, that would be true especially with a smaller turbo and/or low boost levels. Not as much pressure would build up, and if the BOV is set too tight it will shut early.

How do you loosen it? Tighten the screw or is it the other way around? I have a vortech bov that came with the kit. Thanks.

**Loco Honkey** · 08-26-2003, 07:22 PM

Quote:

Originally posted by import_racer@Aug 20 2003, 02:10 PM
When I switch gears, and once I get into the next gear, the blow off valve sounds gets cut off. Is that normal? In videoclips, I hear the full sound of the blow off valve. With mine, when I shift, you hear the blow off valve but once I get into the next gear, it goes away. So if I shift quick, you only hear it for half a second or so.
_______

That would be normal. See, the BOV only opens when your throttle is closed and your manifold is in vacuum. Once you get to the next gear and crack the throttle, the BOV closes. These other guys are right, but they're not on the right track to answering your problem.

08-20-2003, 03:43 PM	#3
liquid00meth Senior Member Join Date: Nov 2002 Location: Laconia, NH Posts: 3,201 iTrader: 0 / 0% Rep Power: 47	indeed, that would be true especially with a smaller turbo and/or low boost levels. Not as much pressure would build up, and if the BOV is set too tight it will shut early. __________________ "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." -The thought provoking George W. Bush

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08-20-2003, 03:10 PM	#1
import_racer Member Join Date: Oct 2002 Posts: 52 iTrader: 0 / 0% Rep Power: 15	When I switch gears, and once I get into the next gear, the blow off valve sounds gets cut off. Is that normal? In videoclips, I hear the full sound of the blow off valve. With mine, when I shift, you hear the blow off valve but once I get into the next gear, it goes away. So if I shift quick, you only hear it for half a second or so. _______

08-20-2003, 03:21 PM	#2
MarkJimenez99 Senior Member Join Date: Mar 2003 Posts: 149 iTrader: 0 / 0% Rep Power: 15	Check your blow off valve adjustment. Your BOV is probably set to "Hard" which means that you have to rev it really high to hear the full sound. My Greddy type-s bov adjusts by turning a screw.

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Blow Off Valve Sound