How Much Timing to add for E85 ethanol fuel

[terrenceLP]

Hello,

I'm looking for megasquirt settings for a good starting point for running e85.

I have two options in the Megasquirt -

Flex fuel - allows timing and stuff to be added to the base tables

Table Switching - Allows a 2nd set of settings - VE, Ignition, afr, etc...

Can anyone provide a good starting point?

This is a 7mgte 550cc with a Holset.

 

[Rollus]

I guess you already read this: http://www.megamanual.com/flexfuel.htm
You want about 42% more fuel when on 100% E85
Adding 3-5° timing seems a good starting point.

 

[terrenceLP]

Thanks, but I'm using msextra, and I'm looking for actual user settings. I'm just looking to get a starting point before the dyno.

 

[TurboStreetCar]

Go to the dyno with the same timing and bump it up 2 degrees at a time on the dyno.