Idle speed |EQU| 850 RPM , |PLS|or-50 RPM
When at normal temperature from outside the car the valve gear can sound a little noisy , but from inside the car with the doors and windows closed my car just hums from the engine and bellows from the exhaust!
850 RPM is idle speed at normal engine operating temperature . On cold start the idle speed can be well over 1000 RPM , from memory upto 1200 . As the motor warms idle speed will , or shud , gradually fall depending on the ambient temperature .If yr idle speed is high with a fully warm engine it needs resetting at a dealer with the MUT diagnostic set. If idle speed is varying at normal operating temperature then there is a problem which can be most easily checked with the MUT dianostic set.
Mine idles at at about 1100-1200rpm at start up but drops to the normal 850rpm when warm. Mine does sound a bit tappety at start up and for a few seconds after starting while it waits for the oil to reach the tappets, nothing to worry about though but if it sounds tappety for a few minutes or longer then there maybe a problem.
The whining is the Starter, but I was talking about the noise when the engine was started.
By the way, my VI idles at 1200 when cold, then drops at 850, with not a very stable idle (always on the verge of stalling). I guess it's normal though.
PS: Now I am sure all Evo owners (and that includes me) are paranoid....