This map sensor can measure the boost over 1.5bar and it's necessary for K04 Turbocharger. It fits to all 2.0L TFSI engines, like in the GTI MK5 or Audi TT. The standard sensor can not measure over 1.5bar, so if our engine is boosting higher than 1.5bar you should change to this sensor! The ECU mapping has to be changed according to the new sensor calibration! Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com