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Thread: bov ???

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Posts: 31-35 of 35
2011-04-15 06:45:01
#31
Originally Posted by Will
the BOV should also be slightly open at full vacum/idle when recirculated


On my old setup I could feel quite a bit of flow coming out of the BOV at idle. 30 Hg is quite a bit of suction.
2011-04-15 06:55:29
#32
Originally Posted by Vadim
On my old setup I could feel quite a bit of flow coming out of the BOV at idle. 30 Hg is quite a bit of suction.


30?? I never saw over 20, and only 12-15 with the s4 cams
2011-04-15 11:39:06
#33
Originally Posted by Will
30?? I never saw over 20, and only 12-15 with the s4 cams


A bit of an exaggeration, since you can't physically hit above 29.9 Hg - 29.9 is already deep vacuum no more vacuum after that . I think 20-25 is more in check. Now mind you boost gauges are not always the most accurate...
2011-04-15 11:41:40
#34
Originally Posted by Vadim
A bit of an exaggeration, since you can't physically hit above 29.9 Hg - 29.9 is already deep vacuum no more vacuum after that . I think 20-25 is more in check. Now mind you boost gauges are not always the most accurate...


stupid American units.... 0Kpa FTW
2011-04-15 16:31:44
#35
Originally Posted by Will
the BOV should also be slightly open at full vacum/idle when recirculated


Some of the bov companies make a valve that keeps the air from exiting the bov at idle... Under vacuum it sucks a plate closed over the end of the bov.

When I was venting to atmosphere, my car idled pretty bad and stalled sometimes. If I would push the bov closed it would idle right. So then I went to a recirculating setup and everything was fixed.
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