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Old 11-04-2012, 11:14 AM   #1
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Racing tune

I have a racing tune on my 2012 mustang gt which requires 91 or better. I live on Long Island where there is a gas shortage and only regular (87) is available. I uninstalled the tune returning my car to stock. I had to put half a tank of 87 in. Do you think my engine will be ok running on 87?
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Old 11-04-2012, 11:18 AM   #2
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Shouldnt be an issue since you loaded the stock tune back in. Stay safe man!!
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Old 11-04-2012, 12:12 PM   #3
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Thanks, I can def notice a loss of power but at least I'm not damaging the engine. This gas shortage sucks!!!!!!!! I want to go back to driving my car the way it was designed to be driven!!!!!
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Old 11-04-2012, 12:47 PM   #4
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Good luck bro
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Old 11-04-2012, 12:51 PM   #5
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Just avoid going in the higher rpm range, an you should be fine.
I everything alright over there?
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Old 11-04-2012, 01:32 PM   #6
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I doubt it. Just kill the tank
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Old 11-05-2012, 09:47 AM   #7
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Yea everyone else nailed it, you'll be safe on stock tune, I wouldn't romp on it though, I don't care that the engine is "able" to use 87 octane, that high of compression really does require 91 or better. Eliminating spark knock by adjusting timing isn't much better for the motor.

Glad you're ok! Stay safe!
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