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3 port boost solenoid

Old 23 December 2011, 02:35 PM
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colebags
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Default 3 port boost solenoid

my car is a 99 turbo 2000 its currently got a 2 port boost solenoid fitted to it but was told when i get a remap will need a 3 port on will a standard 3 port boost solenoid do the job of a sti i think.also where does the top port go to as mine only has two on the bottom
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Old 23 December 2011, 02:56 PM
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MY99/00 existing 2 port setup:-





3-port plumbing:-

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Old 23 December 2011, 03:05 PM
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that is a good guide cheers mate so a standard 3 port will do the job then where abouts is the turbo outlet nipple in that top pipe then as the bottom 2 go to the same place on 3 port dont
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Old 23 December 2011, 05:58 PM
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The 3-port's top port connects to the bleed nipple on the outlet spout of the turbo compressor housing.

The 3-port's middle port goes to the turbo's wastegate actuator housing's nipple.

The 3-port's bottom port goes to the bleed return port on the large turbo intake pipe (under the inlet manifold) - or simply left VTA. (If left VTA, then you need to plug that intake port with something suitable, like a screw.)

This (very) rough diagram might help you visualise it better:-

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Last edited by joz8968; 23 December 2011 at 06:12 PM.
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Old 24 December 2011, 07:16 PM
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joz8968
thanks very much mate ye i have got it now thanks to your diagram will i be able to fit one before my remap
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Old 25 December 2011, 07:21 AM
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Old 01 November 2014, 11:58 AM
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Does a std 3 port boost soloneid run better than a 2 port and what was the reason they changed from the 2 to 3 port?
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Old 01 November 2014, 08:16 PM
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Cripes, this thread is a blast from the past.

3-port is supposed to control boost better. Don't really know what the reason is though.

Actually, it was the first MY93-96 "phase 1" cars which were fitted with the 3-port. Then from MY97, all are fitted with a 2-port, AFAIK.

But at OEM boost pressures at least, the 2-port works just fine, anyway.

Last edited by joz8968; 01 November 2014 at 08:23 PM.
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Old 01 November 2014, 08:27 PM
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Can I just swap the 2 port straight to a 3 port set up
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Old 01 November 2014, 08:31 PM
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I think you have to have it mapped in, for it to work correctly.

Contact Simon @ Jolly Green Monster (well reknowned mobile mapper) - he'll give you the SP...

Last edited by joz8968; 01 November 2014 at 08:35 PM.
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Old 01 November 2014, 08:34 PM
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Originally Posted by joz8968 View Post
I think you have to have it mapped in, for it to work correctly.

Contact Jolly Green Monster (well reknowned mobile mapper) - he'll fill you in with the relevant SP...
Will do
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Old 28 September 2016, 08:47 PM
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Bringing this back from the dead...
I'll be installing a 3port solenoid on an MY99, should I remove or keep the restrictor pill?
Thks.
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Old 28 September 2016, 09:22 PM
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Remove it but leave it until the map is done and the mapper will probably do it for you 10min job.
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Old 01 October 2016, 08:53 PM
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Tried it today... no remap, stock MY99 ECU: spikes at 1.16bar then lowers, I can't see how much I can only see the peak on freessm, but I feel it looses power.
No "pill" on the lines just followed joz8968's layout. I think with a proper remap this will probably be able to maintain the 1.1ish bar rill redline.
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