Anyone exceeding a certain power level with the 1.8T engine will quickly reach the limits of physics with the original sensors and valves. To avoid incorrect measurements and power loss, we recommend these two essential upgrades to our customers:
1) Upgrade mass airflow sensor 80mm (Article 280128) From an output of approx. 230+ hp, the original MAF housing reaches saturation. The result: The control unit receives incorrect measurements and can no longer calculate the mixture cleanly. The enlarged 80mm housing ensures optimal flow and exact values even at high boost pressure.
2) Performance timing valve / control valve N75 (Article 160200) The original OEM boost pressure control valve is often too weak for higher boost pressures. It tends to regulate imprecisely, which leads to boost pressure drops and noticeable power loss. Our performance valve works extremely quickly and stably – the perfect choice for your electronic boost controller and consistent boost pressure build-up.