APR 3.0 TFSI Coolant Performance System (CPS)

The APR Coolant Performance System (CPS) is a massive front-mounted cooler upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! It is 140% larger than stock and features a self-bleeding cooling circuit to ensure it is always operating at peak performance. The system is easy to maintain and fully integrated into the factory cooling circuit. This upgrade is highly recommended at every stage!

Intercooler
Intercooler Intercooler

Quick Facts:

  • Dramatically lowers intake air temp (IAT)
    Increases and retains HP while minimizing power-robbing heat soak!
  • Massive frontal surface area (core) and volume (radiator)
    29" x 05.5" x 2.1" – 159.5"² & 054"³ - OEM
    22" x 17.4" x 1.7" – 382.8"² & 130"³ - APR
  • Highly effective dual-pass core design
    Tightly packed external louvered fins rapidly dissipate heat as coolant flows through internal cooling paths.
  • Self-bleeding and self-optimizing system
    Air-bubbles trapped within the system kills performance! The self-bleeding system constantly removes air from the system, without any manual intervention!
  • Retains factory safety and control
    The ECU retains full control over the system, protecting against pump failure and coolant leaks.
  • Easy to install and maintain
    All the performance without the headaches. Each system is fully pressure tested after assembly.
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System Overview

The 3.0 TFSI uses a liquid-to-air intercooling cooling circuit. A front mounted radiator is responsible for cooling hot coolant, while two heat exchangers within the supercharger are responsible for cooling the supercharged air before it enters the engine.

system overview
Intercooler
Intercooler Intercooler

The Problem:

The front mounted radiator is tiny. Air trapped within the system devastates the cooler’s effectiveness, while the sheer lack of surface area and coolant volume makes for a system incapable of keeping up with the cooling demands at higher performance levels.

The APR Solution:

The APR Coolant Performance System replaces the front mounted radiator with a much larger and more capable dual-pass unit. It has 140% more frontal surface area and holds 141% more coolant than the factory unit. Tightly packed louvered fins rapidly dissipate heat over a much wider area than the factory unit.

Next, APR CPS incorporates a unique self-bleeding system into the cooler design. Keeping up with manual bleeding is messy, and all but impossible. However, the APR system continuously self-bleeds, increasing the coolers effectiveness automatically!

The result is simple: More horsepower over a much wider operating range!

Testing

APR’s engineers conducted a multitude of tests on the street, dyno, dragstrip and race track with thermocouples placed at the inlet and outlet of the radiator during the design phase. Data from these tests were used to choose the radiator design available today. With the radiator in its final production form, tests were conducted against the factory radiator to measure the effectiveness of each system.

Testing conducted on the dyno provided a semi controlled environment for back-to-back stress testing the two systems. Utilizing a B8 S4 3.0T at APR Stage II+ Ultra power levels, six back-to-back dyno pulls were conducted with minimal cooldown time between runs. APR’s ECU Explorer high resolution datalogging system was used for raw sensor data collection.

Using the APR Radiator, horsepower remained consistent for the first four back-to-back dyno pulls. By the fifth back-to-back pull, horsepower dropped slightly when the IAT protection threshold was crossed. The threshold is designed to bypass boost pressure to cool off the system and protect the engine.

The OEM intercooler did not fare so well. Horsepower began derating on the first pull and the IAT threshold was crossed by the end of the first dyno pull. This trend continued dramatically, resulting in massive power losses to protect the engine from excessive intake air temperature. The factory cooling system simply did not stand a chance. Ultimately peak horsepower dropped to as low as 260 AWHP, whereas the APR cooling system retained over 400 AWHP, even after the sixth consecutive back-to-back pull!

chart chart

Application Guide
Make Model Generation Market Engine Part Number Price  
Audi A4 Typ 8K - (B8.5) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi A5 Typ 8T - (B8.5) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi A6 Typ 4G - (C7) All 3.0 TFSI Coming Soon
Audi A6 Typ 4G - (C7.5) All 3.0 TFSI Coming Soon
Audi A7 Typ 4G - (C7) All 3.0 TFSI Coming Soon
Audi A7 Typ 4G - (C7.5) All 3.0 TFSI Coming Soon
Audi Q5 Typ 8R All 3.0 TFSI Coming Soon
Audi S4 Typ 8K - (B8) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi S4 Typ 8K - (B8.5) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi S5 Typ 8T - (B8) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi S5 Typ 8T - (B8.5) All 3.0 TFSI MS100127$999.99Locate an APR Dealer
Audi S6 Typ 4G - (C7) All 4.0 TFSI Coming Soon
Audi S6 Typ 4G - (C7.5) All 4.0 TFSI Coming Soon
Audi S7 Typ 4G - (C7) All 4.0 TFSI Coming Soon
Audi S7 Typ 4G - (C7.5) All 4.0 TFSI Coming Soon
Audi SQ5 Typ 8R All 3.0 TFSI Coming Soon

Some vehicles require additional hardware "fit kits" as listed below. Some early B8 models with Audi Drive Select (ADS) have a factory dynamic steering cooler, which must be relocated. This cooler is visible through the top of the grill.

Required Hardware Fit Kits
Make Model Generation Engines Fit Kit Photo Part Price  
Audi S4 Typ 8K - (B8) 3.0 TFSI Fit Kit Photo MS100136$49.99Locate an APR Dealer
Audi S5 Typ 8T - (B8) 3.0 TFSI Fit Kit Photo MS100136$49.99Locate an APR Dealer

APR Tuned

Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: (334) 502-5180 Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801

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Notice: Products that affect emissions and do not carry a California Air Resources Board Executive Order are not for sale in California, USA. While we try to keep everything current, APR LLC is not responsible for errors in pricing on this web site. All prices are in USD and are applicable to the United States of America only.