Upgrade air mass meter for 2.0L TFSI engines with conversion to TTS intake or larger turbocharger. Our upgrade air mass meter is larger and can therefore process a higher air mass. This is particularly important when converting to large K04 upgrade turbochargers. inside diameter: 65 mm Software has to be adapted! Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com