Anyone who exceeds 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:
rn1) 80mm mass airflow sensor upgrade (Item 280128) From an output of approx. 230+ hp onwards, the original MAF housing reaches saturation. The result: The control unit receives incorrect readings and can no longer calculate the mixture correctly. The enlarged 80mm housing ensures optimal flow and precise values even at high boost pressure.
2) Performance boost control valve / control valve N75 (Item 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 manual boost controller and consistent boost pressure build-up.