Best power on E85?

[n0dih]

Anyone get any dyno runs in on E85?

All I see is some internet text that has been copied to site to site to site saying 1.153 to 1.40 eq ratio.

Ok, what is it? That is a bard door spec on it.

Anyone have real dyno testing to see?

[AussieLS1evil]

I was having a think about this and found this parameter table in a 2007 L92 4x4 Truck. It's a 2D table based on your set AFR. If you base your Stoichiometric AFR of this it would be around 13.85 +/- for E85.

Just throwing it out there. I would alter this figure until I got the best overall result, then tune from there.

Stoichiometric AFR (Air/Fuel Ratio)
Ethanol % Value
0.0 14.678224
6.2 14.322267
12.5 13.965822
18.7 13.609865
25.0 13.252931
31.2 12.896974
37.5 12.541017
43.7 12.184083
50.0 11.828126
56.2 11.472169
62.5 11.115236
68.7 10.758790
75.0 10.402833
81.2 10.046876
87.5 9.689942
93.7 9.333985
100.0 8.978028

[n0dih]

Wow, thanks! 13.85 compared to 12.5 or so for gas.

Thanks!!

Originally Posted by AussieLS1evil

I was having a think about this and found this parameter table in a 2007 L92 4x4 Truck. It's a 2D table based on your set AFR. If you base your Stoichiometric AFR of this it would be around 13.85 +/- for E85.

Just throwing it out there. I would alter this figure until I got the best overall result, then tune from there.

Stoichiometric AFR (Air/Fuel Ratio)
Ethanol % Value
0.0 14.678224
6.2 14.322267
12.5 13.965822
18.7 13.609865
25.0 13.252931
31.2 12.896974
37.5 12.541017
43.7 12.184083
50.0 11.828126
56.2 11.472169
62.5 11.115236
68.7 10.758790
75.0 10.402833
81.2 10.046876
87.5 9.689942
93.7 9.333985
100.0 8.978028