Stealthy's right.. it allows a more even cooling of the bearings and turbine housing.. The longer you run it hard, such as interstate driving, or a long spirited run through canyon roads, or at a track, the longer you should let it idle.. I, for one, don't feel like sitting in the car once I get to my destination, to wait until it cools down some.. Therefore, I use a turbo timer. And mine is set to run a minimum of 60 seconds, and a maximum of 9 minutes, although the most I've seen it is 5m30s....
Pour about 4 tablespoons of motor oil in a pan, and put it on the stove.. Get it to 12-1500*F, and leave it for ten minutes.. ...Then throw away the pan, because the oil will be coaked and stuck to the pan..
This 'coaking' sticks to the bearings, and in the lines, reducing oil flow and exponentially reducing the life of the bearings..
Ever went to a truckstop, and all the trucks are running?? Hmm.. why is that? AC? maybe.. maybe not..
It's to allow the exhaust temps and oil temps to come down to a normal level.
In closing, know what you're talking about before you try and "School" someone.. Else you make yourself look like a moron.
As for them being "bling".. Isn't all the Civic Type-R s**t we buy for our USDM civics, for "bling factor"?
And my turbo timer is almost invisible...
battle battle