What happens if you mix 91 and 93?

If you usually fill your tank up with 87-octane gasoline and you accidentally put in a higher octane blend (say, 91, 92, or 93), don’t worry. You may feel a difference in the way the vehicle runs and may notice an improvement in gas mileage, but that’s about all that will happen.

What happens if you mix 93 with octane?

Unless you are driving a car that requires 93 octane, you won’t damage a thing. Reality check here: Gas stations that provide three different octane grades of fuel only have two storage tanks of gasoline. One tank of regular unleaded gasoline and one tank of premium octane gasoline.

Is 93 and 91 octane the same?

Premium gas is usually considered to be any gasoline that has an octane level of 91 or higher. You’ll usually see these listed on pumps as 91 or 93. Sometimes, 93 octane will be listed as “super-premium” or “ultra.” Unleaded gasoline is usually considered to be “regular” when it is 87 octane.

What happens if you run 91 octane on 93 tune?

your ECU will adjust to 91 Octane on the 93 file, but you will not see gains from it. The ECU is made to adjust your timing no matter which file you run, but you’re skewing the ECU’s ability to adjust and taking away leeway from the ECU to be able to do so with the wrong fuel.

Can you use 93 octane on a 91 octane car?

In other words, you can mix any fuel in any ratio as long as none of the fuels you mix is less than 91 octane. However, you are wasting your money by buying higher octane fuel than the engine requires (paying extra for additives you don’t need and engines can’t burn).

What is the difference between 91 and 93?

Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time.

Is it OK to mix different octane gas?

Yes, drivers can mix the two types of fuel. The combined gas types will result in an octane level somewhere in the middle — something the vehicle “will survive,” according to The Drive.

Does 93 octane make more power than 91?

All things being equal, an engine can be tuned to make more power on 93-octane fuel than 91. In both cases, the higher-octane fuel would be a plus. The Ford Focus ST owner’s manual lays out the advantage in black and white: 252 horsepower on 93 octane and 243 horsepower on 87 octane.

What does a 91 octane tune do?

Registered. I also just found out/read that the 91 octane tune automatically puts approximately 15\% throttle boost into the car. So, by me adding the 20\% that I did, it actually went to 35\%.

How much HP does a custom tune add?

To give a ballpark figure – if you are on a stock car, you could probably gain 10-15 horsepower from a dyno tune. However, if you are running on performance parts like exhaust and turbo then 50 horsepower gain is possible – even more depending on your engine and what performance parts you equip.