Centralitas CDI / ECU
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What is a CDI?
A CDI ignition, also known as Capacitor Discharge Ignition, electronically controls the ignition timing of the spark plug, which starts the combustion of fuel in the cylinder. The energy required for ignition is stored in the capacitor of the CDI and converted via the ignition coil into the high voltage required for the spark plug spark.
Advantages of the CDI ignition unit
Compared to conventional ignition coils, CDIs generate a significantly stronger ignition function.
In addition, this type of ignition requires no other wearing parts such as contact points, making the CDI ignition unit a maintenance-free and low-wear option when it comes to ignition.
Adjusting the ignition timing is especially important for high-end scooters. Disorders can occur in the high speed range, especially with a 2-stroke engine, and their effect is even greater at high engine performance. The spark timing is advanced (pre-ignition) to allow the fuel to be ignited optimally at high speed. With 4-stroke engines it is necessary to advance the spark timing at lower revs compared to two stroke engines. Therefore, dynamic CDI's cannot be exchanged between 2-stroke and 4-stroke scooters, while static CDI ignition units can often work on both types of engines.
The engine control unit (ECU) is used on vehicles with injection technology
The ECU acts as a central computer, processing incoming signals from various sensors.
This control unit sends the necessary commands to the ignition and/or injection system and thus controls the entire engine.
The CDI can be used as a speed limiter, but also as a tuning part
Because it is possible to stop a CDI from transmitting an electrical pulse from a certain speed or rotational speed, a CDI can be used as a speed limiter in order to ensure that the scooter in question meets the applicable homologation requirements. A distinction is generally made between 45 km/h and 25 km/h. Replacing a limited CDI with an unlimited/open one will allow the engine to deliver its actual engine performance. The use of an open CDI not only improves the top speed, but also makes other tuning parts such as exhaust systems or tuned cylinders perform better. PAY ATTENTION! This is officially not allowed for use on public roads. It is often necessary to adjust more engine parts in addition to the CDI.
Use the vehicle filter to choose the right CDI or ECU for your scooter
To find the right CDI or ECU for your two-wheeler, you can filter the site with our vehicle filter on the right brand , model and type of your scooter or bike. Original parts and possible alternatives are listed here.
