Karter E25 OTS Maps

We have released our Ethanol Off The Shelf (OTS) Maps to give your engine the extra advantage. Most car enthusiast add octane booster when filling up due to the medium quality level of fuel we get from petrol stations. Most of us wish we could buy 98Ron fuel instead of 95Ron.

Ethanol has a much higher octane rating than gasoline therefore allowing us to generate more power out of this 4-cylinder Ecoboost motor found in the FOcus ST250. Not only do we get more power by running a blend of ethanol but also benefit from a cleaner combustion chamber as well as a colder running motor prolonging engine life. Due to the properties of ethanol, a correctly calibrated tune is required for the specific blend of ethanol.

What changes can you expect from our E25 OTS maps

In our E25 OTS maps, we have optimised power delivery to improve upon traction in the lower gears and increased power where there is enough traction increasing overall acceleration. You will notice the engine feels more responsive and has a smoother power delivery over your 95Ron OTS map. Overall the vehicle becomes a lot more fun to drive!

About Ethanol

Ethanol is a clear, colourless liquid. This renewable fuel is made from various plant materials collectively known as biomass. It is typically added to normal pump fuel(gasoline) by petrol manufacturers to increase the octane rating, oxygenate the fuel and reduce air pollution. 

Ethanol is still a relatively new fuel to the South African market due to very few cars being fitted with flex fuel systems. For those than don’t know, flex fuel is the ability to utilize alternative fuels. Most modern cars are now fitted with ethanol and methanol compatible fuel lines and fuel pumps as these fuels would typically corrode the internal lining of the fuel lines and fuel pumps. 

Karter E25 OTS Maps
Karter E25 OTS Maps

Why Run Ethanol

Depending on the quantity of ethanol mixed with pump fuel or percentage blend (E25, E30, E85) the higher the octane rating becomes. Have a read here for why we care about octane. Ethanol also has a higher auto ignition temperature than gasoline which helps prevent pre ignition. Ethanol has a better chemical cleanliness than gasoline. It is less prone to gum formation (insoluble solid which stick to the metal surface along the vehicle fuel system, from the tank to the combustion chamber) depending on the additives of the supplier of fuel, it is less prone to icing (formation of ice in the fuel lines) and reduces deposits common to direct injection fuel systems.