Cobb Tuning Redline Carbon Fibre Big SF Intake System - Nissan GTR R35 08-18Same Big SF design in a new lightweight, great looking material! Works from stock to big power builds. In stock form, the R35 ECU measures airflow using a Mass Airflow (MAF) sensor located in the stock intake system. As modifications add up and increase power, the airflow can increase to the point that it exceeds the MAF sensor"s maximum capacity, preventing the ECU from accurately measuring air mass, and thus unable to deliver the appropriate amount