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Practical Reflash Tuning


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If you’re interested in tuning modern performance vehicles then the technique of reflashing is increasingly becoming the best and most cost effective technique available to you. Reflashing allows the maps held in the stock ECU to be modified and optimised the same way the factory calibration engineers did the job.

While the way the engine responds to fuel and ignition is no different than a standalone ECU, the way the ECU operates, what the maps in the ECU look like, and the correct approach to tuning the engine do differ. This course will give you the skills and techniques you need to successfully reflash a stock ECU. :

  • How a factory ECU measures load
  • How to deal with torque limits
  • How to correctly scale a MAF sensor
  • How to adjust your tune for new injectors
  • How to adjust the fuel delivery
  • How to optimise ignition timing
  • How the factory knock control system functions
  • The difference between open loop and closed loop
  • Speed density vs MAF load measurement
  • How to configure and use a data logger

After completing this course you will have the knowledge and skills to confidently begin tuning cars with a commercial or open source reflashing package. More importantly though you will learn the HPA 6 Step Process that you can apply to any tuning job - This will give you the correct order to approach your tuning and ensure you don’t overlook any critical tasks.

This course assumes an understanding of EFI tuning principles, and if you’re new to tuning we would recommend you consider our EFI Tuning Fundamentals course and Understanding AFR courses first.

NOTE: This course covers reflashing using a commercial or open source reflashing package. We don’t cover how to find maps in a stock ROM file or how to reverse engineer a stock ECU. This course does not include the software or hardware required to reflash your vehicle - We don’t sell these products.

What you will learn
  • How a factory ECU measures load
  • How to correctly scale a MAF sensor
  • The 6 Step process to apply to any reflash job
  • How to optimise fuel delivery and ignition timing
  • How to configure your ECU for new injectors
  • How to use data logging to optimise your tune

Common Questions

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.

Is this course applicable to Diesel Tuning?

No, this course is not applicable to diesel tuning. If you want to learn to tune diesel engines you will need to check the Diesel Tuning Fundamentals course.

What tools do I need to start tuning with?

The best tool to start with is this course! You need to walk before you can run, and the more you learn here the better you will understand the equipment you need for your application, and we even discuss it in the course for you too. This is not a 'secret' we're hiding, but rather us trying to make sure you buy the right tool the first time, and that comes from learning what you need first!

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.

Is motorcycle engine tuning covered in this course?

Yes! This course applies to all 4 stroke petrol EFI engines. That includes motorcycle tuning, or even if your engine is in a boat or a plane!

My own engine is turbocharged. How relevant is this going to be to me?

While a turbo or supercharger adds another element to the tuning process, the fundamentals of supplying a suitable air fuel ratio and the correct ignition timing are still the same. There are naturally aspirated, turbocharged and supercharged examples in this course which will show you that fact in practice regardless of your own setup.

Will this also help me learn how to tune my carburettor?

No, EFI systems follow the same fundamental rules when it comes to tuning, but the way you make the changes using EFI and the fine control you have is very different to carb tuning to the point if you are tuning a car, you are unlikely to get much value from this course material.

Is this tuning course specific to my car and ECU?

Yes! The core course material applies to almost any reflash tuning platform, and there are some specific examples which will help you learn a little faster if you are learning using the same.. We add new examples every year for FREE if you already own the course material, and some exsisting examples include: EcuTek, COBB, HP Tuners, EcuFlash, RomRaider, Hondata which apply to a range of vehicles including GM/Holden, Ford, Toyota, Subaru, Honda and more.

Can I watch the same video more than once?

Of course, lifetime access means you can watch every module just 1, or even 1000 times. It's up to you how and when you learn and then reference your course material.

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.

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.

How many times can I watch the lessons?

You can watch the lessons as many times as you like.

Does this course cover rotary engine tuning?

We cover rotary tuning in the Practical Standalone Tuning course, not this one.

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.

You don't have a specific example for my car and ECU, can I still learn how to tune with HPA?

Absolutely, and you can start instantly! A specific example using your platform isn't needed to teach you how to tune, it just helps you learn faster which is great. Different marques don't change the fundamental laws of physicals or 4 stroke engine operation, essentially they just have different features and software all trying to do the same things as the next company. With that in mind the course will help you learn how to tune using Nistune, SCT, Kess, K-Tag, K-Suite, KTuner, Alientech, Viezu, MazdaEdit, Diablo Sport, Eurodyne, EFI Live, MHD Tuning, UpRev, VersaTuner, ECM Titanium, PCMtec, Dimsport, Woolich Racing, Crome, NepTune, SubaruEdit, TunerPro, Moates and more.

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