19.9psi Boost
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old boost gauge used to show between 1.3 and 1.4 bar as well but just though that was not very accurate but now the PSI3 shows what the ECU is seeing and still showing 19.9 psi, thought it was a bit high but everything is totally standard (apart from blitz nur spec back box)
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Unfortunately I don't have access to another decent gauge to check it, I used to have a half decent gauge with line straight from inlet manifold that read between 1.3b and 1.4b. But only got the PSI3 nowadays and from what information I can find about AFR from the lambda reading, everything seems fine there ie roughly 0.99 - 1.01 AFR on tickover or constant speed and drops to about 0.78 - 0.80 AFR on hard acceleration :S
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Thought that! No issue with fuel cut kicking in? On your car it would have cut at around 15/16psi if held on boost for a few seconds.
Do you have the user manual for the psi3?
Might be worth checking to see what the maximum boost it can display is. 19.9 looks like it's topped out.
Do you have the user manual for the psi3?
Might be worth checking to see what the maximum boost it can display is. 19.9 looks like it's topped out.
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I've not felt any fuel cut kicking in, will have to take it out again tomoro but its been like this for all the time I have had the gauges in. As far as the PSI3 iirc there is no limit to what it will display, ie if the ecu reads it the PSI3 will display it.
Might have to check the wastegate tomoro if its dry too.
Might have to check the wastegate tomoro if its dry too.
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You'd know fuel cut if it happened, nearly puts you out the windscreen!
I think the standard map sensor can only read up to about 1.7bar or thereabouts. I'm wondering now has your map sensor had it?
Does the car feel like it drives as normal or is it a little slower?
I think the standard map sensor can only read up to about 1.7bar or thereabouts. I'm wondering now has your map sensor had it?
Does the car feel like it drives as normal or is it a little slower?
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oh no it definitely doesn't do that.
This is still well under the 1.7bar tho only reaching 1.3-1.4bar. Maybe, will have to have a look for a new one, if not too bad, might be worth swapping as a test.
I don't think its slow at all, but its hard to tell as only been a passenger in other Imprezas.
This is still well under the 1.7bar tho only reaching 1.3-1.4bar. Maybe, will have to have a look for a new one, if not too bad, might be worth swapping as a test.
I don't think its slow at all, but its hard to tell as only been a passenger in other Imprezas.
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I think you need to get a good boost gauge on to confirm the PSI3 is working properly. I've been digging around and found that at least one version of the UK PPP ECU boost target is 13.3psi as standard. We don't know which one though lol.
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Yeah but your stock turbo won't be a TD04 like my classic has and it's target boost is 13psi standard.
Have a look around mate. Unplug the MAP sensor and check the terminals and plug it in again. Make sure the ignition is off though.
19.9psi is a crazy figure to be showing lol
Have a look around mate. Unplug the MAP sensor and check the terminals and plug it in again. Make sure the ignition is off though.
19.9psi is a crazy figure to be showing lol
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Mine is running the standard TD04L. Looked at MAP sensor, all the terminals look ok, the outside is a bit dirty just like the rest of the engine bay (next job is to clean it) but without changing it, wouldn't be able to tell if its working properly or not?!?
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19psi is way too high, if it spikes to that there's a problem somewhere. Wastegate actuator was doing this to my car. I think the OP said it holds at 19.9psi. Maybe it is just a spike?? Can you clarify wrx300 2005??
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I think it spikes to 19.9psi and holds about 19.5psi, will go and put more Shell VPower in tomoro and go for another drive and try get a video of the boost reading.
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Yeah like pie hole says, it shouldn't be holding at 19psi, mine was a 2001 WRX with the 261 bhp Prodrive pack and typical boost was around 1.1 bar or 16psi. I'm sure it reached 19psi at certain rev ranges tho
Might be worth dropping JGM or another mapper a PM just asking for some advice?
Might be worth dropping JGM or another mapper a PM just asking for some advice?