What is the purpose of a turbo timer?
The basic accepted concept of cooling the turbo in your engine, is to allow your turbo to cool off properly when you stop the car, by feeding it a steady stream of fresh oil, and thus likely preventing coking of the bearings (gunk buildup). Most manufacturers of turbo-charged vehicles recommend idling your car after you get where you’re going, for at least 30 seconds, longer if you have really been boosting it. A turbo timer allows you to stop the car, park it, remove the key and lock the door, while a small timer device keeps your engine running for a pre-set period of time.