Ethanol & Flex Fuel Tuning

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Ethanol fuels are a popular option for anyone interested in maximising engine performance. When correctly tuned, ethanol blended fuels such as E85 can offer similar or better performance to many of the specially blended commercial racing fuels at a fraction of the price. Ethanol fuels however require some significant changes to the tuning in order to take advantage of them and ensure engine reliability.

This course gives you an in depth understanding of what ethanol is, how it affects the engine’s operation, and how it can improve engine performance. You’ll also learn how to correctly adjust your tune to take advantage of an ethanol fuel blend regardless whether you’re tuning an aftermarket standalone ECU or reflashing a factory ECU. You’ll also learn how to configure a tune a full flex fuel system that can automatically adjust for varying ethanol contents.

In particular you will learn:

What ethanol and ethanol blended fuels are
How the properties of ethanol can improve engine performance
Why we need to inject more fuel when running on ethanol fuel blends
How the engine’s ignition timing requirements are affected by ethanol content
How an ethanol content sensor works and how to add one to your fuel system
How flex fuel systems work
The correct approach to tuning a flex fuel system
The correct approach to tuning to suit a dedicated ethanol fuel blend
What precautions you need to consider when running ethanol fuels

Important: This course does not teach you how to tune, but rather shows you how to approach the tuning process when dealing with ethanol fuel blends. If you’re new to tuning then we’d recommend you start with our EFI Tuning Fundamentals course, our Understanding AFR course and our Practical Tuning courses first.

What you will learn

Fuel system requirements for ethanol
How to install a flex fuel sensor
Why we need to inject more fuel on ethanol blends
Precautions for ethanol fuels
How to configure and tune a flex fuel system
How to tune for a dedicated ethanol fuel blend

View Curriculum

Common Questions

Do I get a certificate?

Yes, we provide a digital certificate of completion with every course you complete. This is great for the workshop wall or CV.

How long do I have to watch the course videos?

Once purchased you have LIFETIME access to your training course/s. Lots of our customers use these course videos are reference material throughout their careers.

What skill level is this course aimed at?

This course starts right at the beginning making it ideal for beginners with no experience what so ever. It also provides great information at a more intermediate level for those who have already had some experience.

Does this teach me how to mix my own blends like E85?

Yes! This course indeed teaches you how to mix and test your own ethanol blends.

Can I watch the course videos whenever suits me?

You can access your course material via our website, 24 hours a day, 7 days a week, 365 days a year.

Where is this course located?

This is an online course. You can learn wherever and whenever you like. You don't need to travel, and you don't need to work to the tutors pace, instead you can start, stop and reference any topic you want to as you see fit.

Does the payment plan cost me extra?

No! The payment plan just splits the total price for absolutely no extra fees or charges. If you miss a payment, you can even pick up where you left off as life happens, sometimes finances go wrong, and we won't punish you for it, we're here to help you learn instead first and foremost.

How much more power will I make using Ethanol based fuel?

That depends on your application and setup. Boosted (turbocharged or supercharged) engines that are knock limited on pump gas generally see the biggest gains, but there is no set percentage that every engine will or won't make. Tuning doesn't work like that, we can only know exactly how much more power we can make once we have finished tuning the car.

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Ethanol & Flex Fuel Tuning