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09-04-2012, 11:11
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:)
Join Date: Feb 2004
Location: Moray - Lossie
Car: Audi A4 Quattro
Posts: 8,521
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Vacuum lines
Quick question and need a rather sharp-ish answer:
Can you T into the vac line that runs from the manifold to the fuel pressure regulator? I'm just finishing off the install for the new boost controller and its either T off a line thats 4" away or 2ft away. Answers on a postcard  Steve
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09-04-2012, 11:57
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Standard Steve
Join Date: Oct 2005
Location: South Wales
Car: Evolution VI
Posts: 2,784
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You can but id not advise going into that one, id use a bov vacuum personally
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09-04-2012, 12:39
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:)
Join Date: Feb 2004
Location: Moray - Lossie
Car: Audi A4 Quattro
Posts: 8,521
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The problem is the BOV line is -6 and on the other side of the bay. Ever manual i've ever seen says plumb it in there, but the only reason i see not to is that its not a 100% clean line to the FPR, but i've been out for a spin with the line T'd there and the fuel pressure is still spot on and the unit is working fine. Is there a proper full on fact reason why it shouldn't be there?
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09-04-2012, 12:44
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It is what it is.
Join Date: Jul 2010
Location: Faringdon
Car: Evo 6
Posts: 300
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No reason not to that I can think of. Do they not both trace back to the same pipe/joiner in the end anyway?
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09-04-2012, 16:12
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Standard Steve
Join Date: Oct 2005
Location: South Wales
Car: Evolution VI
Posts: 2,784
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As above, there isnt a fully fleged reason for not connecting to that line other than keeping it a clean line. As long as your confident its a secure connection then it shoukd be ok
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09-04-2012, 16:14
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:)
Join Date: Feb 2004
Location: Moray - Lossie
Car: Audi A4 Quattro
Posts: 8,521
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Oh its secure
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09-04-2012, 16:16
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MLR Staff™
Join Date: Jun 2003
Location: Aberdeenshire, Scotland, UK
Car: Red VII GSR,Gunmetal VIII MR FQ340 & Evo V RS
Posts: 11,196
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I personally would not T-off the fuel pressure reg vac
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 Blyton MLR Sprint - Car #33 "The only way of finding the limits of the possible is by going beyond them into the impossible!" |
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09-04-2012, 16:20
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#8 | |
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Standard Steve
Join Date: Oct 2005
Location: South Wales
Car: Evolution VI
Posts: 2,784
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Quote:
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09-04-2012, 21:40
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Senior User
Join Date: Feb 2008
Location: Scotland
Car: 6RS (bit of a work in progress just now)
Posts: 1,055
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i wouldnt do it either, reason being is the more joins you have in the FPR vac line the more chance it has of coming off, if it comes off and you dont know about it your fuel pressure will drop and end up running lean
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