E85 will want a bunch of fuel on cold starts. There's a reason it's diluted so much in winter with gasoline.

Turn the key to on without starting to let the wideband warmup then crank over to start and the Wb will pick up the first few seconds.

 

We aren't on winter blend here, ethanol gauge shows 83%

 

Cranking ve for me is 100%
And my open loop fuel is 1.4 scaled down to 1.0 at 158*
From 20 to 100 kpa

So example from -22 to 14 is all 140s then i drop down..

 

The pcm doesn't use the open loop fueling for startup fueling

And your truck is too rich George warmung up , its sitting at 10.6:1 afr

 

It was 25* and snowing...when its 40 its less afr....when its 60* its 13s

Truck follows that table and always has for me

 

Thats my point; its easier to start E85 when its not really e85 and has gas mixed in. You would never be able to start actual E85 in the really cold unless they dilute it.

 

I see what you're saying. Winter blends would actually be easier to get it to light off, being they would only be E70 or E75 or whatever. So... does anyone have a first line suggestion? I will admit to easily being the least knowledgeable "tuner" on this forum, it's embarassing actually. I turn wrenches and not much more

I was doing some searches, and found a post on a Cobalt SS forum, and I'm thinking of changing my cranking fuel table to look like this (multiply by 1.9):

 

I dont mess with cranking time

 

Ill be honest, the cranking tables have always kind of baffled me somewhat. Just keep adding 10% until it starts

 

Lol....

If he logs cranking afr hell see his issue