Background:
The Majesty competition intercooler is a stock-location tube-and-fin design IC for the Mk7 GTI. In general, tube-and-fin cores have exhibited lower pressure drop than most bar-and-plate styles I have tested.
This post discusses flow testing a Majesty competition model IC, a product that is available for purchase on eBay.
Test setup:
The intercooler is attached to the flow bench using a silicone coupler hose that, on the vehicle, attaches the intercooler to the coldside charge pipe. For the test, this silicone hose is attached to the flow bench using an adapter with a diameter that fits snugly into the hose.
On the inlet side, another silicone hose is attached, and a small bellmouth is installed at the entry to the hose to help smooth airflow into the hose.
The flow bench is operated at a depression of 28″ of H2O, and the airflow through the internal airways is measured using a digital manometer.
A second test is conducted on the airflow through the external fins. The intercooler is placed on top of an adapter, and air is drawn in through the external fins at a depression of 10″ of H2O.
The intercooler is rotated twice, and measurements are recorded at each orientation and then averaged.
Test results:
The Majesty competition intercooler flows 261 CFM @ 28″ of H2O. This is shown on the graph along with other stock location intercoolers that have been tested in this manner.
The Majesty intercooler flows similarly to the other tube-and-fin intercoolers from do88, Wagner, and HPA.
Through the external fins, the Majesty flows 360 CFM @ 10″ of H2O. This is shown on the graph with other stock location and front-mounted intercoolers.
Conclusions:
The Majesty competition tube-and-fin intercooler for the Mk7 GTI was the subject of a flow test.
The Majesty IC flows 261 CFM @ 28″ of H2O through the internal passages. This is comparable to other tube-and-fin-style intercoolers from do88, Wagner, and HPA.
Through the external fins, the Majesty IC flows 360 CFM @ 10″ of H2O. This is slightly higher than measurements of the do88 and HPA intercoolers.