• 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 in² frnt. & 507.62 in³ volume - OEM
      2.250" x 16.2" x 22.00" - 356.4 in² frnt. & 801.90 in³ 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!


      APR’s 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 72.8°F and 98.4 kPa with 78.7% relative humidity. Conditions were similar later in the day during during the APR Intercooler testing with 78.4°F 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 IAT’s and quickly exhibited power-robbing heat soak. IAT’s started at 35°C and quickly rose to 60°C by the end of the first dyno pull. This trend continued with the final dyno pull reaching a staggering 67°C! In contrast, the APR Intercooler only reached 34°C by the end of the first dyno pull. It was then able to continue rejecting heat, only reaching 36°C 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 it’s 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 32°C to a blistering 81°C! 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 IAT’s extremely well. With a starting temperature of 29°C, IAT slightly climbed above the starting temperature to 42°C by the end of the sprint. A difference of 39°C 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?