Hi Everyone,
Can someone please tell me what this wire is? It looks like it connects to something but I've had a good look and can't find anything. Basically the car(2006 WRX) feels like it's slow. It doesn't seem to pull as hard as it used to and I trying to fine out what's going on. I think it's a boost leak somewhere but haven't had a good look yet, I'm hoping tomorrow. Thanks for any feedback.

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It's part of your alarm system - They look like an ultrasonic sensor or condenser microphone - take a look in the end of it.

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Thanks Rossco, inside the end bit/plug it has a small round sticker covering a hole the size of a pin. Does this sound right? I just have standard Brant alarm system that came with the car.

Today I'm going to remove the TMIC and change some hoses. I bought a 3pce silicone hose set ages ago and I'm hoping to find the leak in one of the old hoses. Has anyone else experienced their car feeling slow and not pulling as hard as it used to? Is this the typical symptom of a boost leak?