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Old 10-01-2001, 06:50 PM   #1
Scooby Newbie
Member#: 4212
Join Date: Feb 2001
Location: Colorado Springs, CO, USA
2002 Impreza WRX

Default How can you tell if your boost gauge is accurate?

I put in an autometer gauge this weekend and all seems to be working, but I was wondering how I can tell if it is accurate? I'm running a completely stock (other than the free intake mod) 02 WRX and the limited testing I've done with it shows maximum boost at around 13 PSI (full throttle) in 3rd and 4th gear. I show around 15 InHg vacuum when I'm idling and the weird thing is I show negative boost when my foot is on the pedal a little bit. Is this normal to have negative boost when you are accelerating slowly??

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Old 10-01-2001, 07:24 PM   #2
Scooby Specialist
Member#: 9793
Join Date: Aug 2001
Location: londonderry nh
2002 2010 legacy gt


well max boost specified for the car is 14.2 .. my gaguge reads right around that at wot in 3rd and 4th

I read close to -20 when idling and 0 as soon as I touch the throttle.
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