Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - I want to get to the bottom of this ethanol killing my mpg

shovel · 09-26-2009, 11:29 PM

I run E85 in my s10 and my Tempo. Both have custom ECU firmware and the S10 has an updated fuel injector assembly (no more lame poppets) - running E85 in the S10 pushes me up to +24 fuel trim but that's still within range, no CEL.

They love it. There is a drop in MPG when using E85 vs. straight gasoline and a huge increase in HP. I notice no drop in MPG when using "oxygenated" gas vs. "100% gasoline" .

No fuel pump replacement yet...

09-26-2009, 11:29 PM	#23 (permalink)
shovel Master EcoModder Join Date: Feb 2009 Location: Phoenix Posts: 593 Thanks: 106 Thanked 114 Times in 72 Posts	I run E85 in my s10 and my Tempo. Both have custom ECU firmware and the S10 has an updated fuel injector assembly (no more lame poppets) - running E85 in the S10 pushes me up to +24 fuel trim but that's still within range, no CEL. They love it. There is a drop in MPG when using E85 vs. straight gasoline and a huge increase in HP. I notice no drop in MPG when using "oxygenated" gas vs. "100% gasoline" . No fuel pump replacement yet... __________________ Work From Home mod has saved more fuel than everything else put together.