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C8 fuel system question

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  • C8 fuel system question

    Do you guys think the C8 will have the sensor for detecting how much ethanol is in the fuel and can run regular or E85 and anywhere in between?

    I know they have kits for the C7 that add a sensor then you have to take it in to get the mapping installed in the computer for more HP/Torque depending on the amount of ethanol in the system.

  • #2
    Might be better asked here:

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    • #3
      Originally posted by TOMDOM69 View Post
      Do you guys think the C8 will have the sensor for detecting how much ethanol is in the fuel and can run regular or E85 and anywhere in between?
      It would be nice if GM allowed the C8 to run 105 octane E85 from the factory, as that should translate into a power/torque increase of about 7% based on other GM flex-fuel V8s. That would bring LT2 output to 530 HP.
      http://www.lingenfelter.com/forum_li...=3090#post3090

      E85 is also much less expensive here in the mid-West than 93 octane premium, even when you account for the lower MPGs associated with E85.

      Still, I doubt that GM will make the LT2 flex-fuel capable.
      My C8:
      '20 Elkhart Lake Blue 2LT Coupe, Natural Interior, GT2 Two-Tone Seats, Performance Exhaust, Front Lift, Carbon Flash Wheels, Engine Appearance Package 2000 Status December 27, 2019; 3000 Status January 2, 2020; 3400 Status March 10, 2020;TPW March 16, 2020; Built June 4th, 2020 (COVID-19); Delivery July 1, 2020

      Current Vettes:
      '68 Lemans Blue 327/350 Convertible
      '91 Turquoise Convertible with Hardtop
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      • #4
        I like mixing fuel from the airport with the 93 in some cars . Not going to worry about going the other way to save a few dollars.

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        • #5
          I see some FlexFuel E95 compatible cars on the road here in northern New England, but no gas stations selling E85. In fact, the only one around here I have ever seen with my own eyes is a Shell station in Tarrytown NY.

          I understand the main things changed to make a car E85 compatible is the use of fuel lines and other rubber and plastic components that do not dissolve or swell in almost pure ethanol. Performance car owners would want it, not to "save money", but to take advantage of its 105 octane rating.

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          • #6
            So my town has no station that offers 93. Owners manual says need 93 to unlock full potential. Any suggestions on an additive for each 91 full tank to get the 93 octane level?
            3lt, zeus bronze z51, mag ride Front lift with memory Battery Protection Package Edge Red-painted calipers Performance exhaust Carbon Flash-painted aluminum wheels Rocker panel extensions in Black Carbon Flash Metallic-painted mirrors Black seat belt color GT2 bucket seat Illuminated door sill plates with Stingray logo Full Length Dual Racing Stripe Package, Carbon Flash Metallic ENGINE APPEARANCE PACKAGE

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            • #7
              Originally posted by Ldstoy94 View Post
              So my town has no station that offers 93. Owners manual says need 93 to unlock full potential. Any suggestions on an additive for each 91 full tank to get the 93 octane level?
              Where are you?

              If you live in a high elevation area where regular is typically 85 and premium 91, then not having 93 probably doesn't matter much in a naturally aspirated engine. Those recommendations assume operation at the barometric pressures of sea level.

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              • #8
                Originally posted by Milliwatt Rob View Post

                Where are you?

                If you live in a high elevation area where regular is typically 85 and premium 91, then not having 93 probably doesn't matter much in a naturally aspirated engine. Those recommendations assume operation at the barometric pressures of sea level.
                Im at 3500 feet. So that makes sense. Thank you.
                3lt, zeus bronze z51, mag ride Front lift with memory Battery Protection Package Edge Red-painted calipers Performance exhaust Carbon Flash-painted aluminum wheels Rocker panel extensions in Black Carbon Flash Metallic-painted mirrors Black seat belt color GT2 bucket seat Illuminated door sill plates with Stingray logo Full Length Dual Racing Stripe Package, Carbon Flash Metallic ENGINE APPEARANCE PACKAGE

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                • #9
                  The C7 wasn't flex fuel, and GM hasn't said anything about the C8 being flex fuel, so I doubt it. There were some kits made that would let you convert the C7 to run E85, but they didn't do anything to take advantage of the higher octane.
                  Delivered 5/29!: Scarlet Fever 2021 2LT HTC, Red Mist Metallic Tintcoat, two-tone Natural w/ suede inserts, Mag Ride, Performance Exhaust

                  Gone but not forgotten: SunKissed, 2015 2LT, 7MT, Black over Daytona Sunrise Orange Metallic, Stingray convertible

                  Proud member of the Old Dominion Corvette Club: https://www.olddominioncorvetteclub.org/

                  Never grow up - It's a trap.

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                  • #10
                    Originally posted by Ldstoy94 View Post
                    So my town has no station that offers 93. Owners manual says need 93 to unlock full potential. Any suggestions on an additive for each 91 full tank to get the 93 octane level?
                    Most of the additives sold in the autoparts stores are not good at raising octane levels in a meaningful and cost effective manner.

                    2021 Red Mist HTC / Z51 /Mag Ride / Yellow Calipers / C-Flash Mirrors and Wing / Front Lift / Black 3LT / CF Interior Trim / Yellow Belts and Stitching

                    Atomic Orange C6. Plenty of engine and suspension mods. Gone, but not forgotten

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                    • #11
                      Originally posted by Ragtop 99 View Post
                      Most of the additives sold in the autoparts stores are not good at raising octane levels in a meaningful and cost effective manner.
                      And some of them are very bad for your catalytic converters.
                      Delivered 5/29!: Scarlet Fever 2021 2LT HTC, Red Mist Metallic Tintcoat, two-tone Natural w/ suede inserts, Mag Ride, Performance Exhaust

                      Gone but not forgotten: SunKissed, 2015 2LT, 7MT, Black over Daytona Sunrise Orange Metallic, Stingray convertible

                      Proud member of the Old Dominion Corvette Club: https://www.olddominioncorvetteclub.org/

                      Never grow up - It's a trap.

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