So the other day i was under the hood of my X and noticed that my intake temp sensor was hanging beside the hole that it should have been plugged in. I must have forgot to reconnect after i installed my Airaid a while back. So since i've added and intake and exhaust, i've lost about 1mpg on avg. I'm past the stage of having a lead foot to hear the sound of my mods. I'm wondering if anybody else noticed a slight decline in gas mileage after intake/exhaust. Could my intake temperature sensor be bad and messing w/air/fuel mixture? One other thing, i noticed my engine takes a tad bit longer to come all the way down to it's normal idle speed. Any past experience comments appreciated

As far as the mileage coming down afer intake/exhaust - that's what I noticed. Ideally those mods should increase your MPG, maybe ever so slightly but still...mine seem to have dropped but by very little.

Now the more mods I have the wrose it becomes - I still love it and at this point don't really care about mileage. There's nothing I can do about it anyways so I might as well just enjoy it.

Mine went up slightly after intake/exhaust!

Tom