Dyno Graph
The following dyno graphs show the before and after results on a Golf 7 R which already had a remap. So both the stock airbox and the Eventuri were tested with the same remap in place. All tests were carried out back to back on the same day with the BONNET CLOSED ON ALL OCCASIONS.
Testing showed that the double duct did not produce more power, in fact we could not achieve the same results as we did with our single duct design. This is because the single duct allows for the smoothest and most direct airflow path to the filter. With the scoop directly in front of the opening there is no chance for warm air to mix with the airflow. Furthermore on the double duct, the airflow has to travel at almost a 90 degree angle from the far side of the grill to then enter the filter housing. Here is a dyno graph showing the results we achieved with both duct designs:
Independent Dyno Test
BR Performance from Belgium have tested this intake on a stage 1 tuned Clubsport using their in-house dyno and the intake achieved a 19HP gain: