Boost Guage woes
26 August 2011, 09:57 AM
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Boost Guage woes
Hi all, I have just fitted a spa duel boost oil temp guage, its all functioning and reading,90c for temp max so far etc but the boost is showing a peak of 6.8 - 7.1 psi, ive read a few posts but was wondering is it possible ive plumbed it in the wrong place ? ! looking in the engine bay i have fitted to the vacuum hosing that is attached to the t piece by alternator.Its a 2005 wrx standard apart from panel filter . It feels like it has the same grunt as before but just thinking ive got used to it not being how it should.
Last edited by scoobystu05; 26 August 2011 at 10:00 AM.
26 August 2011, 10:13 AM
#2
Hi all, I have just fitted a spa duel boost oil temp guage, its all functioning and reading,90c for temp max so far etc but the boost is showing a peak of 6.8 - 7.1 psi, ive read a few posts but was wondering is it possible ive plumbed it in the wrong place ? ! looking in the engine bay i have fitted to the vacuum hosing that is attached to the t piece by alternator.Its a 2005 wrx standard apart from panel filter . It feels like it has the same grunt as before but just thinking ive got used to it not being how it should.
26 August 2011, 10:40 AM
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It's feasible that the psi reading could be correct, but as long as your taking a vac from the inlet manifold you should be OK. Check the pipe to the boost gauge is not being pinched etc.
The previous poster meant "get a picture up" in full English.
The previous poster meant "get a picture up" in full English.
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03 September 2011, 09:35 PM
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Seen that, and I recognize it, but I don't know what it is.
BTW, 7psi is wastegate pressure so could be a faulty boost solenoid or missing brass pill from the boost pipes between the solenoid and the turbo.
BTW, 7psi is wastegate pressure so could be a faulty boost solenoid or missing brass pill from the boost pipes between the solenoid and the turbo.
03 September 2011, 11:31 PM
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quick update ,routed boost pipe to recirc valve .still getting same peak value of around 7 to 7.5 , any other ideas would a mapper be able to plug in and see what the psi im running is?
04 September 2011, 12:10 AM
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just found an old tim guage in garage. Plumbed it in running it under the bonnet to passenger window where my able assistant the (the mrs) held it while i went round the block the results are. . . . . . . . 0.8 bar of boost Which i would think is about right . In summary guage needs repairing. Thanks guys
04 September 2011, 09:38 AM
#19
Was the 7 psi on the SPA gauge the tell tale reading shown when pressing the red button or the instantaneous reading you spotted while driving?
There's quite a few parameter that can be changed on the SPA and several can lead to a duff reading.
Only reasons for duff readings I've had from SPA gauges are the menu set-up and wiring the back of the connector to sensor wrongly.
The transducer could be playing up though.
There's quite a few parameter that can be changed on the SPA and several can lead to a duff reading.
Only reasons for duff readings I've had from SPA gauges are the menu set-up and wiring the back of the connector to sensor wrongly.
The transducer could be playing up though.
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