Found this article saying that the WRX engines doesn't need turbo timers because of the way the turbo housings has been designed

http://www.spdusa.com/turbo_timer.htm

What do you guys think about the article?

Forget about going to that website....I'll just copy and paste it here....a short article only. Would like to see what are the opinions from the forum readers will be.
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The use of turbo timers to shut the engine off some preset time after the ignition key is removed was needed in the old days. Early turbocharger bearing housings were only cooled by the lubrication oil of a running engine passing by the turbine bearing. If the engine was shut of when the turbine was still very hot excessive heat wick into the turbo bearing and seal area, cooking the oil to black carbon, causing bearing/shaft failure and heavy oil consumption. The newer (for over 15 years now) style turbo housings are water cooled as well as oil cooled. The original EJ20 Subaru turbo motor took advantage of water cooled bearings from the start and have never had this problem due to a unique design feature we will now explain. It is the reason you do not need to purchase a turbo timer.

The Subaru WRX engines have their water catch tank high on the engine above the turbocharger. It is that little can where you check the water level. When the engine is shut off the water continues to circulate via a physical property of water called a thermal siphon. Simply put, hot water rises up to the catch tank, being drawn from the relatively cool cylinder head water jacket up through the turbo housing. This nifty little idea works every time you turn off your engine.

One still needs to take a cool down lap at the track and perhaps should not stop at the top of a mountain pass to enjoy the view if you have been on the boost all the way up, but for the other 99% of the time there is no need to let the engine idle for a minute before shutting off ignition. Even when the engine is off, the cooling water will circulate past the turbine bearing housing.
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ive never used a turbo timer,

if the car needed one, they'd come from factory.

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Long live the WRC

On my car there is a sticker on the driver's door saying to let the car cool down after spirited or highway driving. I always assumed it was for turbo longevity.

The turbo timer is designed so you can let other wannabes know that your car is the real deal.....by walking away while its still rumbling and then do a slow turn and press ya remote to switch it off. Preferably with an outstreched arm to make sure anyone that sees ya knows that you are the owner turning it off remotely.

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Yeh...i got that sticker there as well. But it says after "heavy" highway driving. I guess that refers to the last paragraph in the article. The previous owner of my WRX never had one on either. He said it's more effective to drive normally for about 2 minutes after heavy driving before turning off the engine.....words of wisdom from a guy that had owned a total of 5 wrxs in his lifetime.

I think you do need to let it run if you have just blasted the car 100% and then stop suddenly... if you cruise for 2 or 3 mins before stopping the probably not. I run an oil cooler and it is bloody red hot all the time so I figure the turbo is getting much cooler oil then normal anyway.

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I always use turbotimer on turbo cars, it's just feel safer but i always make sure that i have an alarm system which has the turbo timer module chip, so it's got dual immobiliser as well

I have a Bling HKS TT. I've used it perhaps 5 times in the past year...

WOFTAM

cool
that saves everyone bout 10bucks in fuel a year
nice