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Discussion Starter #1
So I've had this 04 wrx wagon, basically stock other than a perrin intake and this week I have started having this issue where it feels like I'm losing power over 10psi of boost. At around 3-k rpm it kind of chokes out and i lose any power until i drop it to below 10psi. I think its my map sensor but I need a little advice. As far as I can tell I have no boost leaks.
 

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What leads you to suspect the sensor?

Have you looked closely at the inlet?
 

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Discussion Starter #3
A friend of mine said it felt like maybe it was cutting fuel at higher boost levels so I went looking for a sensor that would have some control over that and when unplugged it ran fine. So I hooked a scan took into it and it appears to be 2-3 psi off what my mechanical gauge says.
 
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