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      12-07-2012, 02:35 PM   #12
1911A145
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Drives: 135i
Join Date: Mar 2012
Location: Port Saint Lucie, FL

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Some stock cars, (Like my 2011 5.0 Ford Mustang) had an adaptive ECU. (our cars do not...) I could, from the factory, run anything from 87-93 octane.... and it would adapt. Tuners quickly found out that it also adapts very well to race fuel... and torco. So cars that have adaptive ECU's like the 5.0... will... do very well on a "stock" tune. But for our cars, I still stick with the advice I gave above.