Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Had flexfuel engines not been somewhat mediocre, would ethanol be more widely accepted?

roosterk0031 · 10-18-2018, 06:26 PM

I imagine MAP or MAF measure air flow good enough. The cobalts have both I don't know if the MAP works as a back up? They don't have to be precise, just consistent, the LTFT will adjust.

Yep, car doesn't care what the fuel is until it exceeds the fuel trim limits.

Wife filled the 15 Rogue with E85 shortly after getting it out of habit with the Impala. Next day I noticed it didn't start as instantly as normal, after a few mile the light came on and figured out what she did. Ran fine the whole time.

The link in #9 shows how much timing is retarded with E0 vs E30. I can't tell with the SG2 if my timing changes any with blends. If I gained the same 4 hp as the Malibu with almost the same engine as the cobalts I don't think I could feel it.

10-18-2018, 06:26 PM	#18 (permalink)
roosterk0031 Master EcoModder Join Date: Jan 2011 Location: na Posts: 1,025 Thanks: 277 Thanked 218 Times in 185 Posts	I imagine MAP or MAF measure air flow good enough. The cobalts have both I don't know if the MAP works as a back up? They don't have to be precise, just consistent, the LTFT will adjust. Yep, car doesn't care what the fuel is until it exceeds the fuel trim limits. Wife filled the 15 Rogue with E85 shortly after getting it out of habit with the Impala. Next day I noticed it didn't start as instantly as normal, after a few mile the light came on and figured out what she did. Ran fine the whole time. The link in #9 shows how much timing is retarded with E0 vs E30. I can't tell with the SG2 if my timing changes any with blends. If I gained the same 4 hp as the Malibu with almost the same engine as the cobalts I don't think I could feel it. Last edited by roosterk0031; 10-18-2018 at 06:35 PM..