hey guys how high should your car idle, i took it out today, its really cold outside, and the idle was really high, it was completly trimmed on the radio, but still idled really high till i turned it down on the engine. but im not sure how low to turn it ? another quicky here: if the weather is colder, should you richen or lean the needles ? and why ? i need to grasp this temp thing. thanks for any help