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      05-22-2014, 11:10 PM   #5
trixdout
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Drives: '11 335xi 6mt
Join Date: Apr 2014
Location: NNJ

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Thing is with race gas is it will do a number on your O2 sensors. Meaning premature failure due to lead content in the race gas. So, get install the flex fuel wires and run at first 40% e85 and then increase your e85 percent based on your logs of injector duty cycle. You shouldn't go higher than 85% duty cycle. That way if you spring a leak while under high boost on a pull, your comp will be able to compensate for it. Always a good idea to play it safe.
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