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What is ecu for motorcycle?

3 Answer(s) Available
Answer # 1 #

What’s an ECU reflash or remap? How does a bolt-on module like a Power Commander or a Rapid Bike work? And will they tune your motorcycle to make it more powerful, more economical, and have a better throttle response? The truth about motorbike performance tuning…

How does motorbike tuning work?

What’s wrong with my standard ECU?

What’s a remap and what’s a module?

How do I know I need a remap or a module?

Why do motorcycles have a snatchy throttle in the first place?

Which is better, a remap or a module?

What are the pros and cons of a remap?

What are the pros and cons of a module?

Does a remap or module make more power and/or torque?

Does an ECU remap or a fuelling module give better/worse fuel economy?

What will my modified bike feel like?

I’ve fitted an aftermarket end-can; do I need a remap or a module?

I’ve swapped my end-can and fitted a de-cat link pipe to the standard downpipes. Do I need a remap or a module?

I’ve fitted a completely new exhaust system. Do I need a remap or a module?

Can remapping or fitting a module damage my bike or void its warranty?

rmfrqw Shawn
Answer # 2 #

A motorcycle's ECU, short for the engine control unit, will sometimes be referred to as an ECM, or engine control module. So, what exactly is your bike's ECU? The ECU is a device that governs a sequence of actuators within internal combustion engines (automobiles also have them).

Arielle Julian
Chief Visionary Officer
Answer # 3 #

If you’ve been into big bikes for quite some time now, and you’ve begun wondering how you could bring out more performance, or perhaps improve your bike’s throttle response, then you’ve likely thought about upgrading your bike’s Engine Control Unit, or ECU.

Now, there are many ways to go about this, however, it’s important to first determine if your bike actually needs some tweaking done to its ECU. This involves taking a look at the modifications you’ve done on the performance side of things, as well as determining what it is you’re looking to improve when it comes to your motorbike’s engine performance.

Think of the Engine Control Unit, or ECU as the brain of your motorcycle. For modern-day fuel-injected motorcycles, the ECU governs a slew of vital engine functions such as timing, air and fuel mixture, as well as throttle response (for bikes equipped with a throttle-by-wire system). Now, in compliance with various emissions regulations in place all across the world, manufacturers set the bike’s ECU parameters to conform to these regulations. As a result, a motorcycle’s engine may be tuned to favor efficiency and cleaner emissions, as opposed to outright performance.

Upgrading your ECU via any one of the methods we will discuss later on, effectively tunes the engine to prioritize performance, instead of fuel economy and clean emissions. A result of this could be a significant increase in engine power and torque output, which ultimately results in a faster bike. However, you can expect to see some decline in fuel efficiency.

There are several types of ECU upgrades available in the market. However, today, let’s talk about the two most popular options. The most affordable and most commonly used approach is what’s known as an ECU reflash. Now, many performance-oriented tuning shops offer this service for nearly all modern-day performance motorcycles in the market. When the ECU is reflashed, it’s effectively reprogrammed with new parameters for most, if not all parameters pertaining to engine performance. This means that the new engine settings, or map, overwrites the stock settings installed by the manufacturer.

Another equally popular, albeit a more expensive option is the piggy-back ECU. Now, as the name suggests, this setup doesn’t overwrite the manufacturer's stock tuning. Instead, it sits on top of it, so to speak, and acts as an intermediary between your bike’s stock ECU and the engine. A key benefit of going with a piggy-back ECU is the fact that it’s a plug-and-play upgrade. Meaning you can always return to your stock ECU settings, should you so desire.

There are a few instances where an ECU upgrade is essential, while other times, it simply boils down to user preference. Some examples of times wherein an ECU tune would be deemed necessary would be when installing an aftermarket full-system exhaust, intake, or making major tweaks to the internals of your engine. Tuning your engine after major upgrades is essential in ensuring that, one, your performance modifications are put to good use and are able to efficiently optimize your engine’s performance, and two, to prevent unnecessary premature wear on your engine’s internals.

Ranjeet Bhojak
Structural Engineer