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09-05-2021, 03:41 PM | #1 |
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OFT Stage 2+ E85 better MPG than 91 octane
Been running OFT Stage 2+ v4.03 (on 91 octane) for six months averaging 23-24 MPG. Swapped over to Stage 2+ E85 v4.03 about a month ago (running E85 octane obviously) and noticed my MPG increase to 27-29 MPG. No new mods or changes to the tune. Didn't change how I drive. I'm just curious if anyone else has encountered the same change. I was always under the impression I'd lose around 30% MPG on E85 vs 91 octane.
Car: 2017 Subaru BRZ 2017 Performance Package ECU: OFT Stage 2+ E85 v4.03 Intake: K&N Cold Air Intake Kit Exhaust: Tomei Expreme UEL Header Tomei Expreme Over Pipe Magnaflow 15157 Cat Back Exhaust Tires: Michelin Pilot Sport All Season 4 - 215/45ZR17 |
09-05-2021, 03:49 PM | #2 |
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Check mileage between fill ups. Dont look at the dash display
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The Following User Says Thank You to Lantanafrs2 For This Useful Post: | Boomerang (09-06-2021) |
09-05-2021, 05:48 PM | #3 |
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Something wrong
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The Following User Says Thank You to gen3v8 For This Useful Post: | Celica00 (09-08-2021) |
09-08-2021, 01:53 PM | #4 | |
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Quote:
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09-08-2021, 03:06 PM | #5 |
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91 I was averaging 28-30 mpg
E85 averaging 22-23 mpg The loss in mpg is just slightly more costly than the savings of the cheaper fuel in my area. Wow that sentence hurt my head. Worth it, but I have no idea how you're making more mpg |
09-08-2021, 06:03 PM | #6 |
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OFT V4 flash on E85 and doing 18-20mpg
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RaceComp SS-1, Complete SuperPro bushings, TR Motorsport FF10 17x9 +45, GruppeS UEL, HKS Hi-Power V2, OFT(93/E85) |
09-13-2021, 09:22 AM | #7 |
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09-22-2021, 12:59 PM | #8 |
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If the calculations for mileage aren't changed it won't read correctly. I don't know how you were getting only 22-23 on 91 as I would get 36 for long highway trips and 28-29 when averaging locally.
On E52 (best I can find in Arizona) I now drive almost exclusively city and I get like 17-18 Jaden |
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e85, e85brz, e85tune |
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