I have tested the E85 and it true 85%. But on flex fuel %, it changes all the time -never the same
Even on same tank of gas Is there any way to lock the % in the tune
I have tested the E85 and it true 85%. But on flex fuel %, it changes all the time -never the same
Even on same tank of gas Is there any way to lock the % in the tune
Flex Fuel learning is only as accurate as the rest of the modeling in the tune. If Inj data or MAF data is wrong, it will skew the learned %. As well, if you don't allow the car to learn properly, for example through steady state conditions. You as the driver can mess up the learning procedure as well. If I assume the car is stock, I'd say you just need to give it a fair chance to learn properly.
Additionally, if you're measuring the % , you can turn flex fuel logic off and change the stoich value the appropriate stoich based on tested ethanol %.
Thanks for response - I let it learn and Drove half a tank out 84% —next day , start and drive - nothing change and the 74% ? Why ?
Yes stock maf and injectors. I want flex fuel to work correctly. I have done dedicated e85 and that works fine
Ps I let it learn with AC off - AC on and fuel trims and % change too
post your tune and logOriginally Posted by paulsmithsr
paul sounds like endpoint locking isnt set or the values are off for it to set or the memory recall for the AFR is set to use initial.
id agree, post the tune/log
The endpoint lock is like 10.4Afr I believe and that would be in the 70% range. I noticed the same thing and just lowered the points to 9.8 and it will read 80%+ now.
Yep that worked thanks
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