I have a boosted 01 Sierra and im looking to switch it over to E85. Ive been searching the threads for some advice on what needs to be changed first to start tuning. Any help would be great. I think I saw somewhere that the stoich AFR needs to be changed to 9 or around there but unsure. The truck is on 10lbs right now but I would like to turn up the boost a little. Wot afr is 11.0 right now on 93. Thanks in advance
If it's truly 85%, just change the stoich in the tune to 9.77. All fueling is based on this entry.
It may need a bit of fine tuning here and there.
Be sure you have enough injector and fuel pump capacity as you will need approx 30% more flow.
E85 won't need to be as rich, and you should be able to add more timing as well.
Ron
Y2K C5 A4 Coupe (10.78 @ 127) Cathedral port 6.2
S476 L33 5.3 69 Nova 8.76 @ 158 Drive to the track street race car
06 Cobalt SS bought new
Truck has 80# injectors and walbro 450 pump. So I should be fine there.
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