On a D series engine you can find the air intake temp sensor in back of the intake towards the timing belt side - has a two prong plug on it held in with two philips screws. Buy another sensor from honda and install this in your CAI or factory airbox away from the engine leaving the old one behind to plug the intake. Extend the harness to reach the sensor and you're done. Works very well in hot weather - hondas hate heat! This works for two reasons - ECM senses cooler air and gives more ignition timing, also leans out air/fuel at cruise. The only downfall is on a cold day you will get a richer running engine, so just plug the connector back in the old sensor when the outside temp goes under 50 or so degrees.