Start the engine let it idle is called workshop run in.. They normally do it with their track car.. cause no time and place to drive the car around to run in the car..
'For ur info, my 'working hour' car is a mutated wira, outside 'ori' (prevent police kacau) but inside, a VR4 engine with TURBO (up to 4 bar) which able to 'boost' a healthy 400HP++...but i preset the turbo 'active'...