The first E85 start of the day even in 70-80 degree weather is beyond difficult. Once I get it to fire, it will start great for the rest of the day. I did not tune the truck, but my thoughts are that because I had some mechanical ignition issues at the dyno that I've since resolved, that timing is excessive during cranking. I do not have a crank sensor position code, so I don't think it is the CPS...

 

good luck man. I've had starting issue (long cranking time) with e85 for years. I've been unable to fix it via the tune. My conclusion: e85 and 7 range plugs don't fire off like straight gas

 

That is the shittest timing table ive ever saw but that sint going to effect starting


Check your open loop target fueling
Check closed loop enable temp

 

Ill disagree...25* out cold start on e85 mine fires up juat fine

 

I've had E85 cars before so I understand the realities... but these are beyond long cranking times. We're talking about 3-4 mins of short cranking sessions (with letting the battery recover in between), do that 6-7 times, get a cough, then hold the throttle open like a carb'd motor, then finally fires and idles perfect right away. All in all it's a 5-6 min process.

 

What is cranking fuel set to...it can fire like 93 with right adjustments

 

Example of how e85 fires when 25* outside

 

That fires off really nice there George.

You really killed the aesthetics of the engine bay with the wrap on the downpipes. Straight stainless would have looked so much better.

 

post up your tune george

 

My exhaust is aluminum


My cranking VE is 100%
My open loop fuel target goes from 1.40 to 1.0 by 155*
My timing isnt crazy...22* during warm up...18.5-19 during operating temp
Idle target...1100 to 975 based on temp

Log afr vs kpa during cranking...change ve to help during this

My truck is open loop as no 02s but with narroebands is easier

Enable 02s at 105* based on ect value



My idle is high cause of cam size and cubes...then sound