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I just bought a Civic with a B16a motor - B18c head (I think)

It has a computer upgrade (the previous owner said it was "tuned")

**Edit** Also I noticed he has the Crankcase vent tube blocked at the air intake throttle body side

and he has a breather air filter thing at the valve cover (excuse my lack of terminology)

(not sure if this could be a cause)

Anyways, when at idle it sits at 2500rpm

The previous owner just put in a tps sensor and said it was like that ever since the computer upgrade

Is this normal? What might need to be changed to correct this down to a normal idle?

Please let me know as it is getting colder and I dont want the car "warming up" at 2500rpm


Thanks alot guys

-New Honda Guy-
Stephen