Okay I'm new to the Ecoboost platform and in the past I have dealt more with V8 engines but I have a question for anyone who has made changes to a OTS tune or created a "from scratch" tune utilizing the Accesstuner software. I am wanting to go to an E30 tune and I have been looking for threads giving some basic information as to what parameters/values need to be adjusted to achieve this on the Ford Focus RS Ecoboost motor. I am pretty sure that you would need to adjust your AFR to be set for whatever ethanol content you would be running whether it be E30 or E40 and fuel scalar and timing advance would need adjusted I am assuming. I am thinking that I could just use one of the Cobb OTS tunes that I currently have and make the adjustments based on datalogs after I have put an E30 mix in the tank. I also know that I will either need an ethanol sensor to know the exact content or I would have to do periodic testing of the E85 at my local fuel station. Let me know if anyone has any info on this or if you could just point me to a previous thread that spells this out. Let me know, Thanks in advance.