Background: A question was asked if the small chamber at the back part of the lower half of the stock airbox has an effect on the airflow through the airbox. This was not something that I’ve tested so when an opportunity arose I ran an experiment to see if a difference in airflow would result […]

Background: do88 makes an intake system for the Mk7 that replaces the upper half of the airbox, the accordion hose, and they also provide a turbo inlet elbow. This test will be to evaluate the airflow through the fully assembled intake, along with using an aFe air filter. Test Procedure: The do88 intake system is

Background: ARM Motorsport provided a sample of their cat-less downpipe to conduct a flow test as a follow-up to the flow test with their catted Mk7 downpipe. Previously a CTS Turbo 3.5″ cat-less downpipe was flow tested and I am interested to learn how the 3″ ARM cat-less downpipe compares. Test Procedure: First, the flow