Another E85 question thread

Hello all,

I have a 2007 Grand Prix Supercharged that I am switching over to E85. I put in 60# Deka injectors and the high flow E85 pump. I have read a lot of posts and there really isn't a definitive way. I had good printouts from years ago but lost them. Here is what I did so far. I changed stoich to 9.67 which I read is the E85 reading. I changed the injector flow rate for the 60# in the tune. Is this correct and is there anything else I need to change. If so is there a write up on how to do it? attached is a copy of the tune.

Make sure you update the rest of the injector data, but you're on the right track!

Which ones and how? I thought adjusting stoic takes are of the other settings :-/

Sorry for the delayed response. You also need to update the voltage offsets, minimum injection time/amount (I don't recall what HP calls it), as well as some of the other more in-depth injection parameters. There are multiple threads on this.

I?ve changed the stoich back to normal 14.7 since our pcms does not map it well.

I wish there was a decisive how to thread! The information is all over place and I?m not sure what to believe.