Quote:
Originally Posted by camaro1
factory flex fuel vehicles can run on straight e-85 or any mixture of gas and e-85,, if you program a standard vehicle to run on e-85 you must fill up with straight e-85 every time,, the factory flex fuel vehicles have a sensor to measure the alcohol content and can vary the timing and fuel to run on any % of gas/e-85
the aftermarket conversion boxes have a switch so you can go back to standard gasoline if you want to but you need to run out most all of the e-85 first, then fill up with gasoline and flip the switch back to stock
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I was talking about factory engine options, so there is a difference... and as I have read that even if gasoline is rated as E-85, the actual content may be anywhere from E-80 to E-90... that means to run right a single program will not work effectively. It needs the sensor to measure the content of ethanol to program the engine for the best efficency.