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V4 Vacuum diagram's or advice please

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Old 08 November 2013 | 09:01 PM
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Default V4 Vacuum diagram's or advice please

Hello,
I'm after a little advice as to where the vacuum pipework from boost solenoid goes to turbo/wastegate etc. After many hours googling and searching on here I think I'm more confused than when I started.
I keep reading about a restrictor pill and T piece between turbo/wastegate but mine definately did not have this when i removed the pipework.
I took pictures of just about everything but must have missed this out

My car is a V4 1998 Type R.
Any help would be appreciated (there seems to be a lot of unanswered threads just like this when you search on here?).
Old 09 November 2013 | 12:29 AM
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You must have a 3 port solenoid then matey!

Have a look at this:

Old 09 November 2013 | 06:02 AM
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Thanks for that, I found that last night although it looks different to my setup. I couldn't find any pictures of a V4 set up anywhere.
Old 09 November 2013 | 07:58 AM
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Here's a picture I found before it was taken apart...(with added numbers lol)

Name:  Vacuum_zps8ac2692b.jpg
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Last edited by Kwik; 09 November 2013 at 08:07 AM.
Old 09 November 2013 | 08:57 AM
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Yip, that's a 3 port you have.

Pipe 1 - Turbo compressor housing
Pipe 2 - wastegate actuator
Pipe 3 - main intake pipe before turbo inlet
Pipe 4 - Not sure, I'll look at mine later!
Old 09 November 2013 | 09:04 AM
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The car should have a 2 port not a 3 port......Can't say Ive ever seen a 3 port with a port on the left....Strange.

Last edited by jayallen; 09 November 2013 at 09:12 AM.
Old 09 November 2013 | 09:16 AM
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That wouldn't be the only strange thing Jay, I'm 99% sure the blocked off pipe shown should be going to the recirc?

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Old 09 November 2013 | 09:23 AM
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It probably does, the recirc needs a vacuum....
Old 09 November 2013 | 09:26 AM
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Number 4 also goes to the inlet, its the pipe for the map sensor from what I can see.
Old 09 November 2013 | 09:28 AM
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3 port is a popular upgrade for better boost control. Leave it in there.
Old 09 November 2013 | 09:33 AM
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Originally Posted by piehole1983
3 port is a popular upgrade for better boost control. Leave it in there.
Yes, but you just can't go fitting a 3 port and expect the ecu to control the boost in the same way....
Old 09 November 2013 | 09:34 AM
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Certainly, but that would lead you to think that the car might already have been modified to suit.
Old 09 November 2013 | 09:37 AM
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The pipe you have labelled no.4 isn't on my car. There's nothing teed between my map sensor and the other solenoid. Has someone installed a boost gauge from that point? Mine is a 2 port setup and looks to be the same bracket/hardware as yours apart from you having the 3 port now.
Old 09 November 2013 | 09:38 AM
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OEM setup for WRX-RA.........





http://opposedforces.com/parts/impre...llustration_1/
Old 09 November 2013 | 09:41 AM
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Again yes, if running an aftermarket ecu which i dont think he is.....are you Kwik?
Old 09 November 2013 | 01:29 PM
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Ecu is standard, solenoid is as it was when I bought the car. JGM iirc said some v4 have 3 ports but it wouldn't surprise me if it was fitted as an after thought.
Te tee piece is going off to the boost gauge in the interior.
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