It's interesting the things you find on the Internet when you're not looking for it - and one example is an older but interesting and quite detailed guide to building an Arduino-based device that can be used to boost the power output of certain VW TSi engines without altering the mapping in the engine control unit. With this example, the system takes the value from the engine map sensor, changes it then feeds the data to the engine control unit. The whole project is explained along with code, physical wiring requirements and explained in detail.
Remember that you modify your car at your own risk, however if you're interested or just want a good read, you can download the descriptive .pdf file for this project here. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're wanting to make your own off-board Arduino projects - we've got you covered with our new ATmega328P MCUs with Arduino Uno bootloader:
This is the same Atmel AVR ATmega328P microcontroller used in the official Arduino Uno, as well as our Eleven, EtherTen, USBDroid, and other boards. Perfect for building your own Arduino-compatible project directly on a breadboard or on a custom PCB, or for replacing the MCU in an existing board. Comes with the Arduino Uno bootloader pre-installed. Better still, it even has a special label stuck on top with details of the pinout, so you don't even need to look up the datasheet when connecting it up in your project! For more information and to order, click here!