APR Intercooler for Mk7 GTI

APR Intercooler Airflow Measurement

The APR intercooler for the Mk7 GTI is flow tested.

APR Intercooler for Mk7 GTI
APR Intercooler for Mk7 GTI

Resulting airflow for the APR IC along with measurements taken of other intercooler options are shown on the chart:

APR Intercooler Airflow Measurement
APR Intercooler Airflow Measurement

The APR intercooler allows approximately 17% more airflow than the stock Mk7 GTI intercooler at the same test depression.

4 thoughts on “APR Intercooler Airflow Measurement”

  1. Based on last reported tests of IAT compared to ambient, can we conclude based on airflow results that airflow is not directly correlated with how well an IC performs, as far as decreasing IAT? I have an APR IC, and typically see single digit IAT above ambient when doing wot pulls

    1. That’s correct, IAT and airflow are not necessarily correlated. In general you would expect that lower airflow would be associated with better cooling, but that may not always be the case.

      A better IC will have both lower pressure drop and more efficient cooling, a tough combination to get from a single product.

      1. Hi Jeff, what do you think is a good metric, if any, to measure the overall IC performance? Maybe O2 density at engine intake manifold? If so, why not directly measure on that rather than airflow test? Thanks!

        1. I measure cooling and airflow separately and then combine them on a chart, one value is the x-axis and the other is the y-axis. In this way there is an area of the chart, a corner, that represents better overall performance and the opposite corner is poorer overall performance.

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