Pump gas guys beware... Fuel rules have changed.
Maybe it's my comprehension, but their back and forth sure polluted the message and I'm not sure I totally understood it.
Can someone more knowledgeable than me confirm that their point was this: "Different regions of the US had gas recipe restrictions lifted for Covid, and pump gas in many regions had much more Ethanol than usual for that season's recipe, because it diluted the real gas so gas companies could spread it thinner and therefore make more gasoline available to everyone (which also made them more money)."
...is that what they are saying?
So that means if you tuned for 93 with, say, 8% ethanol, and then it changed to 93 with 18% ethanol, then your car would run "leaner" and if you didn't have KR to catch it then it could damage the engine? I may have that backwards but would like to understand it if someone feels like explaining it like a real person and not like these drama queen youtubers.
AAA Fuel Quality Report: https://www.aaa.com/AAA/common/AAR/f...ull-Report.pdf
U.S. Energy Information Administration Article: https://www.eia.gov/todayinenergy/detail.php?id=54839
2022 EPA Fuel Waivers: https://www.epa.gov/enforcement/fuel-waivers#2022
U.S. Department of Energy E15 definition: https://afdc.energy.gov/fuels/ethanol_e15.html
U.S. Department of Energy Flex Fuel Information: https://afdc.energy.gov/vehicles/flexible_fuel.html
Last edited by mk3cn4; Jan 12, 2023 at 08:14 PM.
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They have links to the documents on the youtube page. Basically says that in the time of the Covid crisis they could freely blend what ever the hell they wanted in the fuel due to shortages. Yet not tell the public what blends/additives they did or didn't use.
This at least puts it in words so you don’t have to listen to those goombah’s.
If running a Holley or other wideband system it should compensate nicely on its own. We are only talking a few percent here.
Factory ecu guys like me prob ought to tweak the fueling.
Although I run E85, so I don’t worry about it. I do check my fuel.
FWIW, ran my best ET last summer in my C5 which would have been on this new fuel. It’s properly tuned, so I don’t see an issue with the power end of things.
Ron
I "was" tuning a turbo on 87 before the track closed for the season. Paused that for the winter, been using 93 with somewhat conservative tune for my DD since it's been relatively cheap and wanted peace of mind.
But it's really enforcing the point others were making to me that riding on the edge of an 87 turbo tune could be a big mistake for this exact reason. If I hit a gas station like they describe with hugely diluted 87 fuel, it could very easily kill my engine apparently if I understand this correctly.
Not that it matters during the winter anyway LOL... even with a conservative tune I have almost zero opportunity to go WOT here in Pennsylvania with the cold hard all-season tires on gritty road surface. I can't do WOT even on a high roll right now without spinning. I barely go into PE at all LOL
Last edited by mk3cn4; Jan 14, 2023 at 10:21 AM.
I'll say running them can be tricky. Can't run them on return and they are a restriction on the supply unless you parallel them in. I used mine inline with the factory pump to fill a surge tank. Then used big pumps off the surge. Worked really well.
I'll say running them can be tricky. Can't run them on return and they are a restriction on the supply unless you parallel them in. I used mine inline with the factory pump to fill a surge tank. Then used big pumps off the surge. Worked really well.













