Running 93 octane on my new 2017 truck
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jwanck11 (06-08-2017),
RustyHammer (06-08-2017)
06-06-2017, 08:27 PM
#22
Senior Member
I run a MPT 93 Race tune. So, I need 93, imagine that. I can also run E85 with the same tune. A week and a half ago, 93 was $3.10, E85 was $2.00. Guess what I went with. Hint, saved $30+ on a fill up.
Now,it isn't always worth it due to mileage loss, my cut off is $.80 a gallon difference, any less, I use gas.
The power difference is quite noticeable between the two fuels though.
What is a "relearn"
Relearn process = KAM reset. Don't get anymore power, but throttle response is much quicker, until the ECM "relearns" your light footedness. Is that a word?
Now,it isn't always worth it due to mileage loss, my cut off is $.80 a gallon difference, any less, I use gas.
The power difference is quite noticeable between the two fuels though.
What is a "relearn"
Relearn process = KAM reset. Don't get anymore power, but throttle response is much quicker, until the ECM "relearns" your light footedness. Is that a word?
Interesting article on E85 here from a high performance engine perspective. Some talk here of different heat range plugs.
http://www.hotrod.com/articles/hrdp-...ernative-fuel/
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johnday in BFE (06-06-2017)
06-06-2017, 09:19 PM
#24
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It's interesting that E85 has 72% of the energy per volume as gasoline. In theory, if E85 costs less than 72% of the cost of gasoline, it is a bargain. In your example, $2.00/$3.10 = 65%, so that's a good deal financially to go with the E85. Just have to fill up more often.
Interesting article on E85 here from a high performance engine perspective. Some talk here of different heat range plugs.
Interesting article on E85 here from a high performance engine perspective. Some talk here of different heat range plugs.
06-06-2017, 09:39 PM
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06-06-2017, 09:46 PM
#26
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Truck absolutely runs better and gets better gas mileage. Enough to make up the difference in cost and mileage? No but I also run a Livernois 91 octane tune.
The difference is probably around $4 difference for a 30 gallon fill figuring in the better gas mileage using 91. Very much worth it to me and I don't have to worry about using 91 when towing which is recommended in your manual.
When there becomes a difference of a $1 a gallon and gas becomes more expensive then yes I probably would consider running the 87 tune and saving $30 with each fill but until then....
Last edited by idrive; 06-06-2017 at 11:54 PM.
06-07-2017, 01:30 AM
#28
Senior Member
The ethanol content will have more effect on mpg's than octane rating. If the Wife filled it up with a fuel that had a higher ethanol percentage than you usually use, you're MPG's will be impact. Probably not a whole lot, but since you watch your gauges like a hawk, you would likely notice.
As others have stated though, just by parking your truck on an incline will impact the miles to empty. The truck will adjust itself again in time though.
As others have stated though, just by parking your truck on an incline will impact the miles to empty. The truck will adjust itself again in time though.
06-07-2017, 03:27 PM
#29
I run a MPT 93 Race tune. So, I need 93, imagine that. I can also run E85 with the same tune. A week and a half ago, 93 was $3.10, E85 was $2.00. Guess what I went with. Hint, saved $30+ on a fill up.
Now,it isn't always worth it due to mileage loss, my cut off is $.80 a gallon difference, any less, I use gas.
The power difference is quite noticeable between the two fuels though.
What is a "relearn"
Relearn process = KAM reset. Don't get anymore power, but throttle response is much quicker, until the ECM "relearns" your light footedness. Is that a word?
Now,it isn't always worth it due to mileage loss, my cut off is $.80 a gallon difference, any less, I use gas.
The power difference is quite noticeable between the two fuels though.
What is a "relearn"
Relearn process = KAM reset. Don't get anymore power, but throttle response is much quicker, until the ECM "relearns" your light footedness. Is that a word?
.
06-07-2017, 05:39 PM
#30
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The place local to me is 35 miles one way, hour and a half round trip. But I go to that town at least every other week. Down at my wife's, it's only about a 10 minute ride, and there is at least two places I know of.
I thought you were ramping up to make your own?
I thought you were ramping up to make your own?