New guy on the has a few questions This is my first car with any sought of computer so I say sorry if these questions seems a bit lame but 1) black exhaust,,, is the car running rich. 2) just bought cappa box, and waiting on delivery from one of the sponsors 8psi 10psi and valet tune what is a valet tune 3) what gap do you gap the plugs at when tune is loaded 4) car fresh air vent system ,,, air appears to come through slightly heated is this normal and if not were is the heater tap 5) car idles a bit rougth how ya fix,,, throttle body cleaning?