Gas
Whats a saving of $200 bucks a year compared to replacing the whole engine. The manual says high octane premium unleaded gas only. I would rather pay the extra $5.00 dollars at the pumps than worry about my engine.
You could always drive below 3k rpm. about 65-70mph. Then the evo will get 26mpg.
You could always drive below 3k rpm. about 65-70mph. Then the evo will get 26mpg.
Last edited by evo637; Feb 15, 2006 at 01:20 PM.
Originally Posted by Chamama
Yes you can get away with it. The ECU will retard the timing. In my country we get below 91 octane. My boost gauge shows 21.5 psi (peak) when I reset the ecu, but after a bit of driving, it doesn't go above 19 psi. I know my car will die soon. 

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