Background: As one theory goes the opening on the passenger side of the intake duct is there to assist with generating airflow in the area of the oil filter. The Test: To test this idea the GTI was equipped with a temperature sensor that is placed near the oil filter, directly behind the opening in […]

Background: USP Motorsports sells a boost tap for the EA888 engine that allows for the connection of a boost gauge air line to the intake manifold. To use the boost tap the MAP sensor is removed from the intake manifold and the boost tap is installed in the opening, and then the MAP sensor is

Background: The purpose of this test is to try to determine if the removal of the weather seal at the back of the engine compartment, where the engine compartment and hood meet, will affect the underhood temperatures during daily driving on roads with speed limits of 45 mph and below. The Test: A pair of