Can our Cats do this?

Discussion in 'SRT Hellcat General Discussions' started by Shasta's Dad, Jun 24, 2015.

  1. Shasta's Dad

    Shasta's Dad Silver Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    I've heard that on the 2015 ZO6 if you put in a higher octane(100 or whatever) fuel and power down the PCM, and power it back up after a few minutes it will change the settings for the higher octane. Can our Cats do the same thing?
     
  2. B5 Blue

    B5 Blue Platinum Member

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    Never heard that Z06 did that
     
  3. Cerino2000

    Cerino2000 Gold Member

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    I could but we need the guys that are doing the tuning to chime in and say how much knock retard these cars are picking up in stock form. If they say it is a lot, then ya...it is kinda true and it also depends on what you are comparing it to as in what octane fuel you normally run.
     
  4. hellcat1

    hellcat1 Gold Member

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    I have heard the only benefit to higher octane gas is to help stop the computer from pulling timing
     
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  5. Nycsrt

    Nycsrt BANNED

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    Car has wideband 02 sensor even if u put cheap gas will pick up and adjust

    Octane of choice is ms109 to get to track and add some
    More at
    Track ;)
     
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  6. Cerino2000

    Cerino2000 Gold Member

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    Well if in stock form on 93 octane if there is enough pinging to cause knock retard which pulls timing then the 100 octane would allow less timing pull which equates to more power. Timing is one of the significant factors in power production along with air fuel ratio. Manufactures will typically have a richer fuel ratio in place because it aids in longevity and overall long term durability of the engine.
     
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  7. Cerino2000

    Cerino2000 Gold Member

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    And the idea on pulling battery is on a fresh computer, the car will register the points that caused knock retard as baseline numbers and slowly overtime adjust those numbers as things change...like going to a higher octane fuel. If you reset the computer and start out on higher octane fuel, those baselines start out higher and you don't have to wait for the computer to gradually make the adjustments for the higher octane fuel which can take some time. Effectively, the car learns.
     
  8. Nycsrt

    Nycsrt BANNED

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    That's a good out look but what u missing is how do you know that 93 you
    Bought is 93 not 89 wit baby oil I would say safest is let wideband do its thing
     
  9. Cerino2000

    Cerino2000 Gold Member

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    This is true. We depend on the gas station to be telling us the truth. I will say one thing about that though and that is if you have ever had a car that rquires 93 for optimum performance, and you run 89 in it....you can most certainly tell the difference.
     
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  10. HELLKAT_NY

    HELLKAT_NY Silver Member

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    Where do you get 100 octane these days? Back in the 80s it was very hard to find cam2
     
  11. Cerino2000

    Cerino2000 Gold Member

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    We actually have it availabke at the pump at a few places in the charlotte area.
     
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  12. purnrg

    purnrg BANNED

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    I haven't seen Cam II oil since about that time and 100 octane fuel hasn't been available (except at small airports) since 1977 here
     
  13. Nycsrt

    Nycsrt BANNED

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    Vp racing ms109
     
  14. Paladin06

    Paladin06 Have Guns Will Travel Staff Member Hellcat Car Club Gold Supporting Member

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    I know they have a serious running hot issue.
     
  15. DShatzer

    DShatzer Gold Member

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    Current Aviation fuel also has lead in it. even at the low-lead quantities, definitely destroying an oxygen sensor or three....
    VP and Rockett have 109 or higher available around me.
     
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