sbiggi
20+ Year Contributor
- 583
- 61
- Jan 10, 2005
-
Elizabeth,
Colorado
Pretty sure you dont need a special fuel pump.
You "may" need to replace the orings and other rubber parts in your fuel system, but it would take a while of running e85 to see any issues. In winter months all our gas is 10% ethanol out here in the Colorado and the e85 is reduced to e75 because it doesnt like cold starts.
The main thing is the fuel management. 10:1 or richer is stoich for ethanol, so you would need to tune even richer under WOT. Expect to see 10-15% reduction in gas milage.
I dont think the stock fuel management will work at all, because it will shoot for 14.7:1. If you run a wideband and fake the output to show stoich as 10:1 and run larger injectors then it may work ok.
On top of the cost of getting your car compatible, it isnt going to save you very much money, E85 is supposed to go up in price just like gas because the refineries are going to switch from mbt or whatever its called to E for knock detention. Supply vs demand.
Plus the government subsidises a large chumk of the production of e85, which is the only reason it is not more expensive at the pump then gas.
You "may" need to replace the orings and other rubber parts in your fuel system, but it would take a while of running e85 to see any issues. In winter months all our gas is 10% ethanol out here in the Colorado and the e85 is reduced to e75 because it doesnt like cold starts.
The main thing is the fuel management. 10:1 or richer is stoich for ethanol, so you would need to tune even richer under WOT. Expect to see 10-15% reduction in gas milage.
I dont think the stock fuel management will work at all, because it will shoot for 14.7:1. If you run a wideband and fake the output to show stoich as 10:1 and run larger injectors then it may work ok.
On top of the cost of getting your car compatible, it isnt going to save you very much money, E85 is supposed to go up in price just like gas because the refineries are going to switch from mbt or whatever its called to E for knock detention. Supply vs demand.
Plus the government subsidises a large chumk of the production of e85, which is the only reason it is not more expensive at the pump then gas.
, are how to tune. According to wikipedia "E85 fuel requires a richer air fuel mixture than gasoline for best results. Successful conversions generally require 27% - 30% more fuel flow than when the engine burns 100% gasoline." So, I have a 1G with a MAFT, set up, would I be just adding in ~30% more fuel accross the board and just tuning for knock?