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The mkiv Supra Owners Club

Fuel Octane V.S Tune


Guest Evo TME

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hey guys, im planning to buy a highly modified Evo 9 but im not sure if i will need to reprogram the ECU or not. Its currently tuned on 98 Octane fuel but since im importing the car and the local fuel is only 95 Octane im not sure what the results will be.

 

Can i drive the car or is it unsafe to use it? Should i lower the boost? or should i just have the car reprogrammed on 95 Octane fuel? please feel free to add any other tips or recommendations.

 

Appreciate the help.

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Would really depend on Highly Modified. Ive built and few 400/400 Evo's and used the Stock ECU with my custom maps, still leaving a low octane set in place for safety reasons. Though i Doubt its that highly modified, even a stock Tommi Mak knocks on straight super.

 

But, after reading he aint talking about the EVO..he talking about a supra lol

 

So to answer that, i would look into the possibilty of Blending Fuels, i.e. can you get E15/E85 or run your own Toulene/Xylene Mix with 95'?

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