Audi S4 Performance Exhaust Systems

With its streamlined outline and sporty performance, the S4 perfectly personifies the understated luxury that Audi has grown to be best renowned for. But like all mechanical things when first developed, there is room for improvement as far as the S4 performance is concerned. If you are yearning for a rush of power, torque and better fuel efficiency in your S4, replace your S4 stock exhaust with a custom exhaust from CARiD. Stock exhausts have small diameters and a higher number of bends than is necessary. This restricts exhaust flow, causing spent gases to remain stuck within the exhaust system instead of getting dispelled to the outside. As a result, air supply to engine cylinders is hindered and the engine produces a restricted amount of horsepower. Because of their wide diameter, S4 custom exhausts eliminate this problem, enhancing engine efficiency and increasing horsepower by 10-15%.

Some aftermarket exhausts give much higher power gains; it all depends on the level of customization done and the end-goal they are designed to achieve. CARiD sells an entire range of S4 aftermarket exhausts for 1992 - 2011 models, each offering a specific percentage of power gain. The S4 Borla, Magnaflow, Flowmaster, and Weapon-R cat back systems offer a unique combination of power gain, torque increase and engine performance. They are good options if you hope to get all-round performance improvement. For superior power gains, the Audi S4 Magnaflow Cat Back System is ideal. You will save money when you buy your aftermarket S4 exhaust from CARiD. In addition to guaranteed long service - which ensures that you do not buy another custom exhaust unless you want to experiment with a different model - the dealer offers discounted rates on select exhausts, giving you instant savings.

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    • Borla® Stainless Steel Exhaust System
      (16 reviews)
      # 229
      Stainless Steel Cat-Back Exhaust System by Borla®. When you want the best performing, best sounding, and highest quality exhaust system, you want Borla. Borla straight-through mufflers and mandrel-bent exhaust tubes are custom...
      $312.99 - $1,731.99
    • MagnaFlow® Street Series Exhaust System
      (74 reviews)
      # 598
      Street Series Exhaust System by MagnaFlow®. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note, making a real statement within legal...
      $378.87 - $3,904.65
    • MagnaFlow® Direct Fit Catalytic Converter
      (30 reviews)
      # 839
      Direct Fit Catalytic Converter by MagnaFlow®. If your cat needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the factory unit, with little or...
      $82.70 - $3,460.20
    • Flowmaster® 220 Series Stainless Steel Catalytic Converter
      (5 reviews)
      # 7124
      The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products, to deliver the best possible performance. The shells are made of stainless steel,...
      $65.18 - $349.07
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1769418
      Universal Turbocharger Down Pipe (322001) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 3 in.; Aluminized. This products is created for those who are not afraid of the power. It is fine-tuned to deliver...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $67.14
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1769413
      Universal Turbocharger Down Pipe (221043) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe Kit; For HX40 Style Turbo; Incl. V-Band. This products is created for those who are not afraid of the power. It is...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $102.53
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1769412
      Universal Turbocharger Down Pipe (221040) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; For HX40 Style Turbo. This products is created for those who are not afraid of the power. It is fine-tuned to deliver...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $88.71
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1769411
      Universal Turbocharger Down Pipe (166004) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 3.5 in.; 409 Stainless Steel. This products is created for those who are not afraid of the power. It is fine-tuned to...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $140.49
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1769406
      Universal Turbocharger Down Pipe (162004) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 3 in.; 409 Stainless Steel. This products is created for those who are not afraid of the power. It is fine-tuned to...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $110.83
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1767806
      Universal Turbocharger Down Pipe (126004) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 3.5 in.; Aluminized; Off-Road. This products is created for those who are not afraid of the power. It is fine-tuned to...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $129.65
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1767805
      Universal Turbocharger Down Pipe (125050) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 4 in.; Aluminized; Off-Road. This products is created for those who are not afraid of the power. It is fine-tuned to...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $96.76
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1767801
      Universal Turbocharger Down Pipe (124001) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 4 in.; 98-02 Ford; Aluminized. This products is created for those who are not afraid of the power. It is fine-tuned to...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $83.71
    • Diamond Eye® Turbocharger Down Pipe
      (0 reviews)
      # 1767800
      Universal Turbocharger Down Pipe (122004) by Diamond Eye Performance®. Performance Diesel Exhaust Down Pipe; 3 in.; Aluminized; 2 pc. This products is created for those who are not afraid of the power. It is fine-tuned to deliver...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $86.66
    • Diamond Eye® Exhaust Pipe
      (0 reviews)
      # 1767130
      Universal Exhaust Pipe (420065) by Diamond Eye Performance®. Performance Diesel Exhaust Y-Pipe; 4 in. Dia.; Single In/Dual Out; 409 Stainless Steel. This products is created for those who are not afraid of the power. It is...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $82.50
    • Diamond Eye® Exhaust Pipe
      (0 reviews)
      # 1767124
      Universal Exhaust Pipe (400065) by Diamond Eye Performance®. Performance Diesel Exhaust Y-Pipe; 4 in. Dia; Single In/Out; Aluminized. This products is created for those who are not afraid of the power. It is fine-tuned to deliver...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      $89.58



    Guides & Articles
    Engines have often been compared to air pumps, because the engine that’s most efficient in terms of economy and power is the one that can get air in and out of its cylinders the easiest. That’s why most performance modifications like conical air filters, cold air intake systems, headers, and cat-back exhaust systems are aimed at making the intake and exhaust...
    You may be wondering why so many aftermarket performance exhaust system manufacturers are offering dual exhaust systems connected by "H-pipe" or "X-pipe" sections. After all, aren't two separate pipes, or so-called "true duals", the best for performance? The answer is no, but to understand why we have to examine how a typical internal combustion engine works.
    It's an age-old question that many have asked. Will an aftermarket exhaust be worth the expense? While they definitely can be, an important question to ask yourself is do you care more about the deeper sound they’re designed to produce, or the added performance gained from being less restrictive? As car enthusiasts, we’ve become accustomed to associating the...
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    Audi S4 Performance Exhaust Systems Reviews
    Average rating: 5 5 - 1 reviews
    (5)
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    2002 Audi S4 | Posted by Cody | (Templeton, PA)

    Looks awesome, makes a deeper sound but not that annoying rice car sound; really European and sporty sound. Opened the car up a little bit.

    2 people found this review helpful.
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    Audi S4 Models
    • RS4 Base Performance Exhaust Systems
    • RS4 Cabriolet Performance Exhaust Systems
    • S4 Avant Performance Exhaust Systems
    • S4 Base Performance Exhaust Systems
    • S4 Cabriolet Performance Exhaust Systems
    • S4 Premium Plus Performance Exhaust Systems
    • S4 Prestige Performance Exhaust Systems