I Want E85 Support

[Gr8Speed]

Originally Posted by Enki Timing is too important on these engines to let software manage it.

Plenty of other platforms (Focus ST and BMW in my own experience) compensate timing based on other variables with success. Timing is important on all engines, not just these. I agree failsafes would need to be implemented, but not tuning ignition for different mixes of fuel is just silly. We have knock sensors for a reason. Obviously user input would need to be in primary control (maximum ignition advance per cell table) Personally, I'd advocate having a map-able matrix to control this based on input sensor voltage and just smooth between given inputs (basically at ethanol content X, user input dictates this ignition advance, and at ethanol content Y, user input dictates a given ignition advance- interpolate between the given values). There should be relatively simple ways to implement a control loop based on a given failsafe parameter (knock sensor voltage for example). I'm not sure the ins and outs of how Versatune operates, but a PI controller probably could be set up to do the job.

TL;DR it won't be easy, but it should be able to be done safely.

[ArmanRus]

Maybe something similar to the AEM EMS on Evos where a separate table defines the relationship between the pump gas table and E85 table.

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[Mazdazilla6]

So my next question for @Steve@VersaTune; is when is the next sale on VT?

[Steve@VersaTune]

There is nothing planned at this point. A group buy might be in order when this launches.