Quote:
Originally Posted by cooper1965
I believe it is reporting properly. I had "mostly" straight 93 octane fuel in the tank to start testing (for obvious reasons), OFC that is roughly 10% ethanol. FCSU (fuel comp frequency) HTZ was at 63 showing 12ish% ethanol in the log.
Added a few gallons of E85 and and FCSU HTZ jumped to 71ish and logged ethanol jumped to 21ish%. There were some other changes too according to my tune (timing, ect.ect.). Unless Im completely overlooking something major, its working.
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How many is a 'few' gallons?? It didn't change much if you added a few gallons. I got this mixing down to an art now. Pretty sure you got the same size tank we do so when its on empty, 6gal of e85 and 8gallon of 93 gets me 40-42% ethanol everytime. Thats what i have to run in the winter to keep the fuel system in line and not commanding super high duty cycle. Which contrary to some on here, makes them run lean (while showing ok on the wideband)