I haven't seen anybody ask this yet but.....do you have to wait a few seconds to let the turbo cool previous to turning the Evo off like the WRX?

 

This is the rule of thumb with any turbo after hard use. It's not really for the sake of the turbo so much as it is for the sake of the oil in the turbo and what happens to the oil while the engine isn't running. The turbo itself can withstand extreme heat.

 

On every turbo car you should let the car idle for about 1 minute or so before shutting down. I mentioned it in another post but depending on how hard you drive it will determine how long you should let it sit. After being stopped at a light or slow driving I would let it sit say 30-45 seconds before shutting down. It already had some idle time and didn't get abused much. Driving a couple of WOT runs but calm for a few minutes before parking give it a minute. Hard driving on a track or mtn run let it sit for at least 2 minutes. These are safe numbers to go by. I highly recommend a turbo timer as this can get annoying depending on how much of a rush you're in.

 

It really isn't necessary on the WRX either because it uses a line that continues to cool the turbo even after the car is shut off. I don't know the technicalities behind it, but that's what it's supposed to do. To be on the safe side, though, I usually let the car sit for half a minute or so before shutting it off.

 

No **** ...? A post oiler ? I've never heard of such a thing.

 

The oil tends to burn off or evaporate with the heat, leaving behind ash or additives, I think I mentioned this before, its called coking. an Engine pre-oiler, or post-oiler (pressurized container that feeds oil into the engine after it shuts down) helps.. But if you run 100% synthetic oil, it doesnt 'coke' on the bearings and therefore is less harmfull to the turbo and bearings. I think that is why Mitsubishi requires it. Though its never good to run a car hard when its cold, and just shut down a turbo car without letting it cool down, mitsubishi and most manufacturers understand that its a fact of life in the US market that cars are neglected and they need to do all they can to reduce warranty claims.

 

Thanks, I was just wondering cause when my friend got his WRX the dealer actually told him to let it cool. Although I've driven a lot of different cars with different configurations non of them were turbo so I learned something new...

 

After a hard run, just drive the car under 3,000RPM like one mile before you hit your driveway. Thats all you need, dost waste $200 on a TT.

 

Regardless of hard driving or not the turbo still needs to drain out the residual oil and thus have a cool down period. While yes you can save $$$ by sitting in your car and waiting I personally don't always have the time nor patience. I certainly wouldn't recommend anyone to follow the above advice. If you plan to keep the car awhile play it safe and be kind to your car. If you're the type to swap parts every 6 weeks and do constant maintenance then maybe you don't worry about it. Never in all my years has anyone suggested the above quote. Just something to think about.

 

Are we gonna be able to put a TT on with the way the car locks/unlocks the doors on it's own?

 

I also second this. Driving under 3000 rpm is not enough, but can help shorten the time you need to wait before shutting down the engine.

 

The Evo owners video (the video the dealership makes you watch before giving you your keys) mentions that you should let the Evo cool down for a minute or two before shutting off.

SC

 

According to one of our early owners the auto lock/unlock feature can be disabled. So I assume we can definitely install a TT.

 

anyone got an idea on either A) how hard it is to install a turbo timer. and B) case i dont wanna mess it up, how much they cost to get put in. and C) do you know anyone who does it in teh souther eastern Mass area???

 

You should be able to buy one and have it installed for anywhere between $150-225. Depends on what brand you go with and who installs it. If you're lucky I'm sure you can find a used one or really good price and have the whole thing done under $150. They aren't that hard to install but depends on the car and the tech. HKS has one for $95 plus $15 for a harness. Don't know if they make a harness for the Evo yet. With that you should be able to plug it in with no hassles. Install time should be less than an hour for a shop.