No. MS109 is a petrol with slight oxygenate (alcohol) content (<10%). It runs just like any other premium petrol, but with a higher octane level.
If you're tuned for 91 or 93, you will need more timing with this fuel or the EGT values will increase a bunch.
Motorsport 109™
Recommended for applications with CRs up to 15:1. In engines that can run on pump gas, MS109 is a direct replacement that produces up to 5% more horsepower than premium unleaded. In fact, MS109 makes more power than any other unleaded fuel on the market with the exception of VP’s MR-PRO4.1. Compared to other unleaded fuels, MS109 offers better detonation protection as well.
TYPICAL VALUES
• Color: Clear
• Motor Octane: 101
• Research Octane: 109
• R+M/2: 105
• Specific Gravity: .722 at 60° F