Best gas in town?
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Here's what I had found before I bought the Echecker, it may help. Unfortunately, you'll have to math
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Tested the e85 blend from the Petro Serve on 45th St and 9th Ave SW, 74% ethanol.
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O how I wish I were a cemistry major and i could do this in the lab with some spare time.
Come to think about it your getting a lot or low ratings on your E-85 so I would assume the same for 10%. Though maybe there dumping more in to save cost and its really like 15% as thats what its going to jump up to in the future.
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testing E85 is pretty much a worthless endeavor.
Read the SAE papers on it, there is virtually no difference in knock capability and power of E fuels from 50-85%. In fact you need to be OVER 85% to make any measureable difference with E98 only being marginally better than E85. Ive been using E85 for 7 years, and have never tested it once, never had any issues, and even ran the same tune on e85 and e50 with a VERY minor fueling adjustment, about 2%. In short its a GIANT waste of timeAlso E10 is certifiable up to 15% ethanol content with alot of it being 13-14% as an average
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I disagree, I've seen pretty large swings in my fuel trims switching blends. You could easily damage an engine switching from E70 to E85 and running lean before the trims sort it out. I make sure to stay in closed loop for a day or two before I run it hard.
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Sorry dude but if you are pretty obsessed with your "tune", if your that close to the ragged edge you might want to back it off a tad. I run open loop speed density and never see more than .2 AFR difference ever. If the car runs drive it and dont waste so much time obsessing about tuning
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Filled up Monday at Petro Serve on 2nd downtown - off the scale on my checker, but looks to be about e60. Starts great in the morning, but it's definitely pushed my fuel trims.
It's settled out a little better than this, but this was the low point...
I need to pull a log on it - if it looks clean I may run this all winter.
EDIT - Logs are clean. Idle trim is pegged at -15, but it seems to run fine.
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New tuner doesn't like Stop-N-Go's 91 octane, apparently. Still managed 6 more horsepowers and 11 more torques than my old e-tuner.
So, with the gas tune buttoned up, time to move on to e85.
Cenex @ 25th St & 23rd Ave - 68%
Don's @ 25th St & 52nd Ave - 95%Dafuq. <sigh>
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[email protected];328214 wrote:
New tuner doesn't like Stop-N-Go's 91 octane, apparently. Still managed 6 more horsepowers and 11 more torques than my old e-tuner.So, with the gas tune buttoned up, time to move on to e85.
Cenex @ 25th St & 23rd Ave - 68%
Don's @ 25th St & 52nd Ave - 95%Dafuq. <sigh>
How are you testing you e content? Maybe go back in a couple days and see if it is consistent.
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Quickfuel Echecker.
I went back the next day actually and tried a different pump - got e60. Went back to the pump from the night before and got e75. I called to ask about it, and they said that the e85 isn't blended at the pump, it's straight from the tank. I think the lower e content samples can be blamed on e10, 20 or 30 in the lines from a previous customer, but I can't explain that e95 sample. I measured it twice.
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