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It should look like the picture below. You need it as it is the equivalent of an air flow meter (which the c16xe had but they changed it on the x14/x16).
http://thumbs2.ebaystatic.com/d/l225...yegzQBjrcw.jpg
[EDIT] The wiring will probably be around the same area as the EGR valve as it would have connected near the throttle body into the black plastic inlet manifold/filter pipe.
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Looking at the pictures when you first put it in, the air temp sensor was connected to the original black filter hose:
http://i287.photobucket.com/albums/l...ps9ca5e2e1.jpg
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lol You have got to put it somewhere between the inlet manifold and air filter so in the filter hose somewhere.
Here's where I put it on mine:
https://fbcdn-sphotos-c-a.akamaihd.n..._5729914_n.jpg
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Christ come in to some money then.. Loving the Specialized too, but like the red full frame in the back ground...
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Oh is it? Shame, i have a Scott, but i'd love to build it in to a full sus frame...