Any disadvantages to running straight E85? I've got an inline pump...

V8bait · 06-30-2016, 09:13 AM

Target afr's in the 13's down low and mid 12's in the upper mid/top end when the pump is up to speed. Raise the fuel scalar to keep trims in line and not maxed out. Raise boost as high as you'd like/as high as the pumps can supply fuel. Taper timing to 12.5 degrees at 5k and feel free to add more above 6k.

I think that about sums up 100% E85 tuning.

bigdnno98 · 06-30-2016, 05:09 PM

If ethanol content was lower you would be richer not leaner. I haven't looked at the log, what is your LPFP, HPFP and fuel trim values when AFR is 13?

V8bait · 06-30-2016, 05:23 PM

Also, try to ignore most of the posts in this thread with bad info.

06-30-2016, 09:13 AM	#23
V8bait Lieutenant 406 Rep 574 Posts Drives: e92 335i 6mt Join Date: Oct 2011 Location: Houston iTrader: (1)	Target afr's in the 13's down low and mid 12's in the upper mid/top end when the pump is up to speed. Raise the fuel scalar to keep trims in line and not maxed out. Raise boost as high as you'd like/as high as the pumps can supply fuel. Taper timing to 12.5 degrees at 5k and feel free to add more above 6k. I think that about sums up 100% E85 tuning.
	Appreciate 1 Quote

06-30-2016, 05:09 PM	#24
bigdnno98 Real Car Enthusiast 288 Rep 2,081 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	If ethanol content was lower you would be richer not leaner. I haven't looked at the log, what is your LPFP, HPFP and fuel trim values when AFR is 13?
	Appreciate 0 Quote

06-30-2016, 05:23 PM	#25
V8bait Lieutenant 406 Rep 574 Posts Drives: e92 335i 6mt Join Date: Oct 2011 Location: Houston iTrader: (1)	Also, try to ignore most of the posts in this thread with bad info.
	Appreciate 2 Quote