Utilizing its own B9 Audi® S4® for research and development provided Unitronic with an in-house platform to run through testing on the EA839 engine. Data was collected on its in-house MAHA Chassis Dynamometer, using our standard cooling fans with ducting properly aligned with the front end of the vehicle. The vehicle's front bumper/fascia was fully affixed for all tests. All data was collected on the same day, starting with the OEM intercooler testing first.
Ambient air temperature was stable at 63°F (17°C) throughout the day. Testing consisted of 6 consecutive dyno pulls with a 20 second pull and a 30 second cool down period in between runs, with both the OEM and Unitronic Intercoolers to collect intake air temperatures to provide data on cooling abilities, efficiency, and resistance to heat soak compared to the OEM unit.
The graph above shows the Intake Air Temperature for both the OEM and Unitronic Intercoolers, individually for each of the 6 runs. The Unitronic Intercooler provided significant reductions in air temperature resulting in a cooler, denser charge air being ingested by the engine, resulting in increased performance. It's resistance to heat soak means that the core retains its cooling abilities, even though the most rigorous of conditions.