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Old 07-24-2006, 02:58 PM   #1
sperry7
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Member#: 110079
Join Date: Mar 2006
Chapter/Region: SWIC
Location: Vegas
Vehicle:
06 WRX
Black on Black

Default AP boost gauge to check for boost creep?

I was just wondering how useful an accessport would be to check for boost creep once in a while. I am at stage 2 right now (gauges are my next mod) and I am a little concerned about creep even though I have a high flow cat downpipe. The AP seems to read boost at kinda slow intervals so I'm not sure how accurate it is and if you could tell exactly how high it is booosting.

thanks for any input!
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Old 07-24-2006, 03:06 PM   #2
pharo
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2005 05 Sti
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I am in the same boat as you. I got a friend to sit and do readings for me, as I went up steep inclines in sixth and fifth. Basically I tried to put as much load to see what conditions caused my boost levels to go above 18, so I won't put my car in those situations until a protune. I would recommend a guage that has peak warning, so you don't really have to look at them, until you hear a noise, and by then you should have your foot off the gas. Basically, unless you have a passenger, the AP is very difficult to read and its a major distraction, which is unsafe. It is very accurate, as it reads off your ecu, but it is limited ( I don't know about wrxs but according to COBB the sti AP can read to 18.9 psi).
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Old 07-24-2006, 03:44 PM   #3
sperry7
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Thanks for the reply. I had a friend hold it while I was driving as well but the numbers seemed blink too quickly and at too slow intervals.

?- So once I see any value above the stock boost level that means I have boost creep correct? Or is +/- .5 psi okay or something like that?
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Old 07-24-2006, 05:20 PM   #4
pharo
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the slow color

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+/- .5 psi is ok, as cobb takes that into account on their maps. I am sorry but I am not 100% sure, but I think boost creep is when it goes over steadily, but boost spike is when it quickly shoots way high, and then comes back down. If you can get tari software, you can use a laptop to log your driving, and then using excel, see what boost, and for how long you are at specific psi levels. Its all free software, and you already have the obd2->usb cable. If you get any really specific questions, you can give cobb a call, they are really helpful.
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