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POWERCDI: POWER AND CONTROL Revolutionary engine control unit for enduro, cross and motard racing motorbikes. It's the only one that comes with USB cable, software and the innovative Dynamic Power Control.

Copyright 2017 Fabio Bizzetti, all rights reserved. NOTE: disclosure and spreading of this article is welcome and expressly permitted, provided it is exclusively in the form of a direct link to this web page: any other use is strictly forbidden and will be prosecuted according to law.

Instructions for the first installation of the PowerCDI and of the USB cable-interface driver.

Part 1 - Installation of the PowerCDI engine control unit:

Installation is very simple: you must remove the original control unit and replace it with the PowerCDI.

The latter, in addition to the original connector, is also equipped with a cable (not present in the original CDI) terminating with 2 connectors:

The 3-poles one is the Aux connector, and is intended for interfacing with external sensors. If you have received a TPS cable, you need to connect it to this connector on one side, and to the TPS connector of the carburetor on the other.

The 4-poles connector is designed to be connected to the (supplied) USB cable every time it is needed to do so. When not connected to the USB cable, it must be protected with the special cap that you found inside a transparent sachet.

To separate the connectors or the cap, you need to press (e.g. with the thumbnail) on the tab, to unlock it, and then slide them away of each other, facilitating the operation by a slight twist of the connectors, aimed at further lowering the tab. The use of screwdrivers is not recommended because they will damage the PowerCDI connectors.

WARNING: Depending on the bike in which it will be mounted, the original control unit (and therefore, although not mandatorily, the PowerCDI) may be mounted on the steering column or under the seat. Always make sure that the cable mentioned above is not crushed, for example by reassembling the seat, as unfortunately has happened in this case:

The specific bike is a KTM 2017. The most rational way to pass the PowerCDI cable on this bike is from beneath the main connector, so the seat will not interfere:

Depending on the model on which it will be mounted, take the utmost care to prevent damage.

Part 2 - Installation of the USB cable-interface driver:

Before connecting a PC to the PowerCDI and then using the software (which runs on any version of Windows, from 2000 to 10.1), you must install the driver for the USB cable on your computer.

To do this, the control unit (and therefore the bike) is not required, you only need to have the USB cable and the PC (supposedly a notebook) that you plan to use, so it is an operation that can be done even at home, away from the bike.

The driver can be downloaded directly from the cable manufacturer:

Now, without connecting the USB cable to the PC, you must install the driver you just downloaded, following the instructions that will appear and accepting what is being asked, including the eventual reboot of the PC.

Then you need to connect the USB cable to the PC (but at this stage you do not have to connect it to the PowerCDI, just to the PC), and go to the list of hardware devices found in Control Panel -> (System Properties) > Hardware (only available in some versions of Windows) -> Device Manager (depending on the version of Windows), until you find "Ports (COM & LPT)" (NOTE: to access this window, you can also use the keyboard shortcut Windows key + Pause key), then click on Device Manager:

Now you have to double click on Ports (COM & LPT) to expand it:

You will find at least one serial port called "USB COMx" or "USB Serial Port (COMx)" where x is a number. At this stage, it is important to check if there are other COM ports in the system (even with slightly different names, but with COM followed by a number), and if there is already a COM1 among them. If there is more than one USB COM / Serial Port, you can easily find / identify the COM port number of your cable, simply disconnecting it (to make it disappear) and reattaching it (to make it reappear).
Now that you know for sure what is the serial port (COM) number of the USB cable of the PowerCDI, you need to click on it with the right mouse button, select Properties, then go to the Port Settings tab, click on the Advanced button, you will then find yourself in this window:

Now, at the top, choose COM port number 1 (COM1) and click the OK button on its right. If the system warns you that COM1 port is already in use, but you have not seen any COM1 at the beginning of the previous step, you shall ignore the warning message and proceed with choosing to use COM1 port as the ID for your USB cable. The PowerCDI software can also use other port IDs (from COM1 to COM256), but all the examples we make will explicitly refer to COM1, so it is advisable to set it as COM1 to avoid confusion.

After completing the procedure, you will have properly configured the USB cable of the PowerCDI as "COM1" (or other port).

This is an operation that you will no longer have to repeat, unless you change PC, USB cable, or reinstall Windows.

Part 3 - TPS calibration:

TPS calibration in the original control unit (if a TPS was standard) is usually made on the TPS itself, temporarily loosening one or more screws to physically rotate the sensor. Instead, on the PowerCDI it is possible (and best) to do it via software.

Just connect the USB cable to the PC (for driver installation refer to the previous guide) and to the PowerCDI properly installed on the bike and with the carburetor connected and the engine idle speed correctly set, then - with the engine not running - launch the supplied software, click on the black window of the terminal and type the following commands:


In this way the software on the PC and the PowerCDI will be in communication, and you can send commands directly to the controller. To calibrate the TPS you have to send the command:


The software will now ask you to keep the throttle fully closed to detect the lower limit of the sensor, then to open the throttle fully and keep it this way for a few seconds to detect the upper limit, then the procedure will be terminated automatically and you can release the throttle.

At this point, however, you must save the new parameters in the non-volatile memory of the PowerCDI via this command:


Finally, it is required to make a screenshot or photo and send it to us so we'll too have the TPS calibration data on record and so you'll not have to do it again if you ask us to modify (technical assistance) a map or parameter, but before making a photo or screenshot you must also give the command:


Below is an example of what you should send us:

You are now ready to use the PowerCDI, which is sent with Maps and Configuration suitable for the bike you requested (if you want to mount it on another bike then you will need to load the Configuration and Maps that fit the bike and then redo the calibration of the TPS on the new bike).

The procedure should be repeated in case of replacement of the carburetor and/or TPS, while for idle setting modifications (if limited) the TPS calibration does not need to be re-done because the PowerCDI within a certain limit automatically calibrates the TPS continuously on its own.

Copyright 2017 Fabio Bizzetti, all rights reserved. NOTE: disclosure and spreading of this article is welcome and expressly permitted, provided it is exclusively in the form of a direct link to this web page: any other use is strictly forbidden and will be prosecuted according to law.

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LAST UPDATED on December 16, 2017