Any Problems Running 100% MS109?

Discussion in 'SRT Hellcat Performance' started by VanishingPoint, Oct 12, 2015.

  1. VanishingPoint

    VanishingPoint Silver Member

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    Will there be any problems running 100% MS109? I am actually running a 50/50 mix, but wanted to be sure.

    I know a lot of folks will say the additional octane gives it no benefit, but I am told it is also a better gas in other ways-just want to be sure it won't hurt anything, even if I run a higher percentage.

    Thx-
     
  2. VanishingPoint

    VanishingPoint Silver Member

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    TTT
     
  3. 965

    965 Hellcat Member

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    any unleaded gas won't hurt anything sp go for it and let us know maybe the HC loves the race fuel and gives you more power
     
  4. paul suloff

    paul suloff Silver Member

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    Straight 109 didn't help me, slowed down. Viper guys say O2 sensors can't read it correctly. Plus ECU will only adjust to certain level (without a tune) of additional octane to advance timing. A 50/50 mix will help get everything the stock ECU can offer. IMO
     
  5. StellasHC

    StellasHC Platinum Member

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    My thoughts exactly.. I always mix 50/50 pump 93 and pump 100 every time I get go to the track...
     
  6. csigler6

    csigler6 Hellcat Member

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    100% MS109 will work great and gain maybe 30+ hp, but it has to be tuned to that fuel. 93 oct would then make the engine knock. What I am doing is tuning for both 109 and 93. With the hp scanner and a lap top you can switch your tuning to the fuel you are using. MS 109 at any mixture will not help without a tune.
     
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