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Yesterday i had to replace my O2 sensor on my manifold because they said the other one was really clogged up, Anyways i put it on and go and get the check engine light cut off. After that i was on my way back home and decided to see if i could tell a difference between the clogged one and the new one, so i go into it alittle and it seemed a whole lot slower, so i was like WTF, so i decided to unplug the O2 sensor and maybe its just me but it started running a whole lot faster whit it unplugged, has anyone else noticed this, and is there a reason, thanx