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Differences between 3 port and 2 port solenoid?

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Old 21 March 2004, 08:18 PM
  #1  
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Question Differences between 3 port and 2 port solenoid?

Just tried a 3 port on my car (full-decat, Tek3) and found that it was all over the place. Boost gauge was reading 1.5bar!

Should their be any difference or was it just fitted incorrectly?

Bob
Old 21 March 2004, 09:13 PM
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Bob Rawle
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The differnece is huge, if a car was mapped with a two port in place and then you changed it afterwards the wastegate control solenoid duty values in the ecu will be far too high as you have seen, its not a diy upgrade, only for use to improve boost control when mapping. Put your two port back on, what were you hoping to gain ?

bob
Old 21 March 2004, 11:29 PM
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POC
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Bob (top one!), I spoke to my boy this afternoon and he gave the exactly the same answer Mr Rawle has just given you.

Nothing wrong with my fitting thank you
Old 22 March 2004, 05:11 PM
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Bob: That would explain it then. Was buying the 3 port before having the car mapped...didn't realise it would go bonkers.

POC: Had total confidence in your fitting
Old 22 March 2004, 05:47 PM
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JohnRoly
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Sorry to hijack!!

I have a 95 WRX wagon (import) and recently needed to change the boost solenoid. They solenoid that was already in the car was a 3 port, is this standard? (I am guessing not!). Does this mean my car has been messed around with in the land of the rising sun??
Old 22 March 2004, 05:51 PM
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Bob Rawle
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Early cars up to/incl MY96 have a three port as standard fit.

bob
Old 22 March 2004, 07:41 PM
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chrome
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Bob: any idea why they changed it to 2port for later MY's?
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