• APR launches Audi B9 S4 and S5 EA839 turbo 3.0 V6 FMIC (front mount intercooler)

      The APR Intercooler System is a massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! The system is an easy to install, direct bolt-on design, that is recommended at every stage of performance.

      Quick Facts:

      -Dramatically lowers intake air temp (IAT)
      The factory intercooler reaches dangerously high IAT levels, even on the stock ECU!

      -Massive frontal surface area and core volume
      3.125" x 5.75" x 28.25" - 162.4 in frnt. & 507.62 in volume - OEM
      2.250" x 16.2" x 22.00" - 356.4 in frnt. & 801.90 in volume - APR

      -Highly effective core design
      Bar-and-plate core with staggered and louvered fins.
      Rigorous testing determined core style, fin density, and size.
      Low pressure drop + highly effective cooling = high performance!

      -Smooth cast end tanks
      Engineered for low turbulence/restriction and maximum flow.
      Organically shaped to promote airflow across entire core.
      Pressure tested to prevent power robbing boost leaks.

      -Easy to install
      Simple plug-and-play design with no trimming or drilling necessary!
      Designed by engineers with lasers
      With the best equipment and smartest engineers, it just works!


      APRs engineers tested each intercooler in a multitude of tests to show the impact the APR intercooler has on intake air temperature. The following tests were conducted with a 2017 S4 using the stock ECU calibration on 93 octane fuel and no other modifications. Ambient conditions during the stock intercooler tests were 72.8F and 98.4 kPa with 78.7% relative humidity. Conditions were similar later in the day during during the APR Intercooler testing with 78.4F and 98.5 KPa with 62.8% relative humidity. This gave the APR Intercooler no added advantage over the stock system during the tests.

      First, six back-to-back dyno pulls were conducted with each intercooler. Each run was conducted in 4th gear, from idle to redline, with a cool down between runs. The stock intercooler failed to combat rising IATs and quickly exhibited power-robbing heat soak. IATs started at 35C and quickly rose to 60C by the end of the first dyno pull. This trend continued with the final dyno pull reaching a staggering 67C! In contrast, the APR Intercooler only reached 34C by the end of the first dyno pull. It was then able to continue rejecting heat, only reaching 36C by the end of the final dyno pull. The APR Intercooler performed better after 6 back-to-back dyno pulls than the factory intercooler did on its very first dyno pull.

      Next we tested a 10-135 second sprint through the gears. With the factory intercooler, IAT quickly rose from a starting temperature of 32C to a blistering 81C! It was so bad, we had to abort the test as we felt it was too dangerous to continue further. However, as expected, the APR intercooler handled IATs extremely well. With a starting temperature of 29C, IAT slightly climbed above the starting temperature to 42C by the end of the sprint. A difference of 39C was exhibited between the two units after only a single top speed. This directly translates to faster acceleration, and better performance in all conditions.

      For more information please visit our product page.

      Application Guide

      Audi S4 (B9 - Typ 8W) 3.0 TFSI All Markets
      Audi S5 (B9 - Typ 8W) 3.0 TFSI All Markets


      Product page

      This article was originally published in forum thread: The APR Intercooler System for the B9 S4/S5 3.0T is now Available! started by Arin@APR View original post
      Comments 1 Comment
      1. Sticky's Avatar
        Sticky -
        Edited for formatting and promoted to the front page.

        Great temp data.

        Guessing no dyno data because no tune available yet?