Turbo Timer? Or No?
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This is a discussion on Turbo Timer? Or No? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I have an '07 WRX and was going to get a turbo timer for it. But then a few people ...

  1. #1
    Registered User Jelliefish38's Avatar
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    Turbo Timer? Or No?

    I have an '07 WRX and was going to get a turbo timer for it. But then a few people told me that it was a waste of money/time to have one on a '07 WRX. Heres what the guy said.


    Kevlar: it's because of how the coolant system is designed/setup
    Kevlar: the coolant goes from the turbo to the coolant reservoir, and the reservoir is above the level of the turbo
    Me: so a turbo timer is a total waste of time on a '07 WRX
    Kevlar: so when you shut the car off, the coolant in the turbo heats up and rises through convection up to the coolant tank, pulling in cooler coolant and repeating the process
    Kevlar: yep, waste of time and money
    Kevlar: just dont do a WOT run and shut the car off immediately after, lol
    Kevlar: but with normal driving, or even some heavy-footed normal driving, there's no need to let the turbo cool before shutting the car off


    Is this true or not? Cause if it is then i wont get one but if it is not true then i would like to get a Turbo Timer. Thanks for the help.

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    Registered User rr1911's Avatar
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    you dont need it because it turbo is water and oil cooled
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    Registered User Jelliefish38's Avatar
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    ya but isnt it true when you shut of the engine quickly the oil may sit in the turbo or in the lines and cause the turbo/lines to loose life. Doesnt the TT just help to extend the life of the Turbo?

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    Registered User rr1911's Avatar
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    Quote Originally Posted by Jelliefish38 View Post
    ya but isnt it true when you shut of the engine quickly the oil may sit in the turbo or in the lines and cause the turbo/lines to loose life. Doesnt the TT just help to extend the life of the Turbo?
    it helps extends the life of a oil cooled turbo only... like in a evo
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    Quote Originally Posted by rr1911 View Post
    it helps extends the life of a oil cooled turbo only... like in a evo
    I can't think of a modern car that needs a turbo timer and have no idea how or why they are still sold, since the number of oil-cooled turbos is very small today.
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    Registered User 07wrx4life's Avatar
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    What the guy told you was completely true i had read that same article somewhere and to this day i cant seem to find it, it was a really cool article talking about how the coolant circulates through the turbo even after the car is off. If you really wanted to get a turbo timer just get an alarm system that has it built in, my buddy has one on his evo 9, but like stated above it really wont make a difference.
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    Registered User jma_1000's Avatar
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    Quote Originally Posted by Jelliefish38 View Post
    Doesnt the TT just help to extend the life of the Turbo?
    because of the way modern water/oil cooled turbos work, the turbo timer would only be wasting fuel, by idling the engine longer than it needs to.

    needless to say, i have one on my '07 wagon. its bling factor, and its set for 10 seconds. anything more than that is just showing off.
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    Registered User Micah's Avatar
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    Quote Originally Posted by 07wrx4life View Post
    What the guy told you was completely true i had read that same article somewhere and to this day i cant seem to find it, it was a really cool article talking about how the coolant circulates through the turbo even after the car is off. If you really wanted to get a turbo timer just get an alarm system that has it built in, my buddy has one on his evo 9, but like stated above it really wont make a difference.
    An alarm with remote start can be used as a TT. Our cars don't need them, what others above have said - and this post that I'm quoting above, is correct AFAIK.

    Still, getting into a warm car in the winter, and a cooled car in the summer is nice - though it does arguably waste fuel.
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    Jelliefish38 - I am in the process of rebuilding my motor because it failed after 80k miles. I have a 2004 WRX. When the motor failed I was baffled as to why so I spoke with Vivid Racing and Gruppe-S a lot to become more familiar with the motor and turbo and both shops agreed that a turbo timer was/is not needed on oil/water cooled turbos, such as those found in Subarus. Both shops explained the convection process explained by members above.
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  11. #10
    Registered User Jelliefish38's Avatar
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    Hey thanks alot guys. You saved me alot of money, not just on a TT, but also like many of you said, on wasted fuel. Thank god for Subaru ingenuity.

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