2012 GT vortech V3 ID1000 LTs Boss 302 IM E85 Flex Tune/Log attached

[Kaleph]

Hi Folks,

Still a bit new to this but attached i have my base tune and log file during real world driving. Would love some advise getting a bit of idle flux with AC on and a dip in rpm when decelerating. Just setup flex fuel and car is running on good quality e85.

Thanks in advance!

2012 gt v3 boss302 id1000 v2.07 roush round 2 E85 modified Rev 2.hpt19-09-16 17-56-33.hpl

[Thatwhite5.0]

If you plan on running E85 only, disable Flex Fuel and change Stoich to 9.85.

In Your Spark Advance Tab, change Tip Out Spark
60 60 60 60 60 60 60
60 60 60 60 60 60 60
17 12 10 10 10 14 15
17 12 10 10 10 14 15
17 12 10 10 10 14 15


You need to lower the bottom two cells in your idle spark ac engage/disengage table.

[Kaleph]

Since I still frequently run to New Mexico from Texas and there is virtually no e85 there I gotta keep flex on. Thanks for the info on the other items I’ll give it a shot tonight! Was getting worried cause nobody was responding lol. Now I am assuming the spark fluctuations is just the flex fuel system adding or removing on demand yes? Any best advice as far as improving performance on flex vs a straight e85 tune?

[Thatwhite5.0]

It could be, but I'd lean more toward torque inverse table not being inverse of each other. Return idle > airflow tables back to stock.
You're limiting idle spark to 10. Change idle spark min to 3.
Torque/inverse 0 and 1 need some calculating in idle areas of both tables.
If you watch your torque pids when your idle is going up and down. You could try changing driver demand too. I have a better scale for driver demand

[Kaleph]

Ok I’ll adjust the idle range in torque/inverse 0 I made a few changes and it is behaving better but still doesn’t transition back to idle spark it tends to bounce as though I were still driving so certainly sounds like torque tables or driver demand. What’s your scaling method for driver demand?