Jon Maudlin
Hot running problems in collector cars with ...

 1955 MGTF Modernization

Hot running problems in collector cars with non-cross flow cylinder heads

Mercedes G63 5.5 Biturbo Exhaust System

Quicksilver is now producing an Active Sport Exhaust system for the Mercedes G63 5.5 Biturbo (W463 2012-17).  It is a remote valved system which can be easily switched on or off using the key fobs supplied.  In 'ON' position the vehicle remains relatively civilised allowing discretion when required. In 'OFF' position the system bypasses the silencer offering much more depth and crispness to enhance the driving experience whilst improving flow improving throttle response.  Quicksilver offers two versions of this system, one with their trademark QS Carbon Sleeved Tips, suitable for all standard models and their Integrated Slash Cut Tip option which is suitable for cars with aftermarket bodykits or ideal for customers who wish to add their own tips.

Also in the works for release in the near future are systems for the new BMW M3/M4, Mercedes-Benz C63 and C63 S W205, Porsche 991.2 GT3, and new Acura NSX.   Check back for updates on the release of these systems.

APR CPS Now Available for Various 3.0T / 4.0T Vehicles!

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! Now available for the 3.0T / 4.0T found in the B8/B8.5 A4/A5/S4/S5/Q5/SQ5 and C7/C7.5 A6/A7/S6/S7. Read More

APR's Tuning Suite for the 3.0 TFSI Gen 2 (Simos 16) is Now Available!

APR is pleased to present a full tuning suite for the new Supercharged 3.0 TFSI Gen 2 (Simos 16) equipped A6, A7 and A8 in North America, and the A4, A5, S4, S5, A6, A7 and A8 in the rest of the world!

APR Stage 1 ECU Upgrade
The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 447-478 HP with 379-399 FT-LBS of torque.

APR Stage 2 Single Pulley ECU Upgrade
The APR Stage 2 Single Pulley ECU Upgrade is the next step towards making more power. This stage is designed for use with the new bolt-on APR Supercharger Drive Pulley upgrade and produces 467-500 HP with 398-423 FT-LBS of torque.

APR Stage 2 Dual Pulley ECU Upgrade
The APR Stage 2 Single Pulley ECU Upgrade is the next step towards making more torque. This stage is designed for use with both APR Supercharger Drive and Crank Pulley upgrades and produces 435-517 HP and 409-467 FT-LBS of torque.

APR Stage 2+ Ultracharger ECU Upgrade
The APR Stage 2 Single Pulley ECU Upgrade is the last step towards making more power. This stage is designed for use with both APR Supercharger Drive and Crank Pulley upgrades and an APR Ultracharger Upgrade and produces 473-533 HP with 423-467 FT-LBS of torque.

APR 3.0 TFSI Supercharger Drive and Crank Pulley Upgrade

APR presents the 3.0 TFSI Supercharger Drive and Crank Pulley Upgrades.

APR’s Supercharger Drive and Crank Pulley Upgrades dramatically increase horsepower and torque by increasing the rotational speed of the factory supercharger. APR’s Stage II Pulley ECU Upgrade makes the necessary engine management adjustments to handle the increased supercharger speeds, and in turn allows the engine to create more power. The pulleys are sold separately, allowing for multiple levels of performance, each of which builds upon the other. Finally, when combined with APR’s Ultracharger Throttle Body Upgrade in a dual pulley setup, the system is alleviated of power robbing inlet restrictions, allowing the engine to achieve exciting new levels of performance!

APR Presents the B9 A4, A5, Q5, and Allroad 2.0T ECU Upgrade

Our previously released B9 A4 ECU Upgrade now includes support for the 2.0 TFSI as found in the new A4, A5, Q5 and Allroad! This upgrade dramatically increases output to 306-314 Horsepower with 367-388 FT-LBS of Torque, depending on fuel grade. Expect a dramatically quicker vehicle that gets even more powerful when adding our massive front mount intercooler. Get it at APR Dealers today!

Quick Silver Exhaust Systems

We are excited to announce our collaboration with QuickSilver exhausts. They have been in business since 1972, 6 years prior to us opening our doors. QuickSilver manufacturers stainless steel exhaust systems for modern as well as vintage cars. We have installed their systems on; a 1970 Jaguar XKE, 1973 Citroen SM, 2017 Range Rover Sport,an Audi R8 and a 1983 Matra-Murena 

Click Here to visit their website