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New STI Owner


tranquil

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Hi Everyone,

 

(posted this in the wrong section before, how do i delete?)

 

First time Subaru owner here, have just purchased a 2007 WRX STI,

I am just wondering what fuel i should use at the pump?

 

I have read on forums you can get your car tuned to use 100 octane?

 

Also any recommendations to improve power slightly but improve reliability also? 

 

Any advice would be greatly appreciated.

 

-Lucas

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Congratulations on the new car, Generally, on a turbo subaru, 98 octane minimum. They can usually cope with using 95 in pinch, but you risk pre-ignition/knock if you give it a boot full. The ecu can adjust, but only so much, and its harder to compensate under heavy load.

 

There are ways you can tune the car the compensate beyond what the car itself can do, but I personally haven't played around with that, my GC8 is still running what it left Japan with 14 years ago.

 

Might be good to ask about in the tuning sections, or have a talk to someone like PBMS and see what they can suggest, especially if you're wanting to increase power, as just wacking up the boost and fanging it is a good way of breaking something. 😛

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