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Old 08-14-2015, 09:46 AM   #4
Tcoat
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Ya a tank of 87 won't hurt anything. The ECU just pulls timing to prevent knock. Run the tank down pour some 91 or 93 in (like has been said) and give it a tank worth of time for the ECU to relearn. Every time you change octane the ECU has to relearn so don't panic during that process.
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