1999 Audi A4 Performance Exhaust Systems

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    • MagnaFlow® Street Series Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 20206391
      Audi A4 Quattro 1.8L 1999, Street Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. Dual Rear Exit. 3" Tubing. 5" H x 8" W x 11" L Muffler. 5" H x 8" W x 14" L Resonator. 3.5" Polished Stainless Tip. The...
      Moderate SoundDelivers More Horsepower
      $1,046.49
    • Borla® S-Type™ Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 1221768
      Audi A4 Quattro 1.8L Standard Transmission AEB 1999, S-Type™ Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE SOUND, Dual Left Rear Exit. 3.14" x 4.63" Inlet Dual Round Rolled Angle-Cut Long Tips. 2.25" Tubing. When...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $847.99
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 22199319
      Audi A4 1999, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $470.03 - $587.89
    • MagnaFlow® Direct Fit Federal Catalytic Converter
      (0 reviews)
      # 61586919
      Audi A4 / A4 Quattro 2.8L 1999, Direct Fit Federal Catalytic Converter by MagnaFlow®. 2" Inlet / 2" Outlet Diameter. 21.75" Wide. Includes Gasket, Pre and Post-Cat Sensors. Without Air Tube. If your car needs replacement, install...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $470.03
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 22198876
      Audi A4 / A4 Quattro 1.8L 1999, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 7" Wide. Includes Gaskets. If your car needs replacement, install one that will get you through the smog check and give you more...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $451.26
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (1 reviews)
      # 22198037
      Audi A4 / A4 Quattro 1.8L 1999, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2" Inlet / 2" Outlet Diameter. 7.13" Wide. Includes Gaskets, Pre and Post-Cat Sensors and Air Tube. If your car needs replacement,...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $362.13
    • Bosal® Catalytic Converter
      (0 reviews)
      # 36757474
      Audi A4 / A4 Quattro 1.8L 1999, Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $330.73
    • Genuine® Muffler
      (0 reviews)
      # 8911786
      Audi A4 Quattro 1999, Muffler by Genuine®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you waste your time...
      $527.90
    • Ansa® Connecting Pipe
      (0 reviews)
      # 7770221
      Audi A4 Automatic Transmission 1.8L 1999, Connecting Pipe by Ansa®. Position: Front. Note: Catalytic Converter to Center/Front Muffler. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system...
      $110.33
    • Starla® Exhaust Pipe
      (0 reviews)
      # 7792263
      Audi A4 1.8 Standard 1999, Exhaust Pipe by Starla®. Position: Front. Note: Catalytic Converter to Center/Front Muffler. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be...
      $121.39
    • Genuine® Exhaust Manifold
      (0 reviews)
      # 8819979
      Audi A4 / A4 Quattro 1.8L 1999, Exhaust Manifold by Genuine®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you...
      $493.13
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 20554885
      Audi A4 1.8L 1999, Exhaust Flange Gasket by Bosal®. Between Converter and Front Pipe. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.72
    • Bosal® Rubber Mounting
      (0 reviews)
      # 20554870
      Audi A4 1999, Rubber Mounting by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get OE-quality...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $7.66
    • Genuine® Exhaust Stud
      (0 reviews)
      # 8820638
      Audi A4 / A4 Quattro 1.8L 1999, Exhaust Stud by Genuine®. Turbo to Manifold Studs. Note: Turbocharger to Exhaust Manifold Mounting Studs 10x28mm Also recommended #s When Replacing Turbo Charger 058 115 105C Oil Pump 058 145 735...
      $2.23
    • Walker® Direct Fit Catalytic Converter
      (0 reviews)
      # 35446456
      Audi A4 1.8L 1999, Direct Fit Catalytic Converter by Walker®. This catalytic converter is constructed specially for your vehicle to directly replace the original equipment part and comes ready to install. The part is designed to...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $281.24 - $336.30
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 8747178
      Audi A4 1999, Universal Catalytic Converter by Walker®. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission reduction...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $85.93 - $157.86
    • Bosal® Catalytic Converter
      (0 reviews)
      # 20554912
      Audi A4 1999, Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced manufacturing...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $192.49 - $410.39
    • Eastern® Direct Fit Catalytic Converter
      (0 reviews)
      # 54547001
      Audi A4 1999, Direct Fit Undercar Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $314.98
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 64459763
      Audi A4 / A4 Quattro 1999, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty...
      Direct fitMade from a heavy duty stainless steel outer shell
      $278.78 - $376.13
    • Walker® Quiet-Flow™ Muffler
      (0 reviews)
      # 17724365
      Audi A4 1999, Quiet-Flow Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features 100% structural stainless steel construction that resists rust three times longer than aluminized mufflers...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $164.52 - $299.51
    • Bosal® Muffler
      (0 reviews)
      # 20554921
      Audi A4 1999, Muffler by Bosal®. This muffler is constructed by one of the leading OE suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration allows for easy, bolt-on installation...
      Designed to deliver ultimate performance and a quality OE-style soundAluminized steel construction for maximum durability
      $118.94 - $276.06
    • Walker® Intermediate Pipe
      (0 reviews)
      # 18153325
      Audi A4 L4 1999, Intermediate Pipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is manufactured...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $94.72 - $103.44
    • Bosal® Front Exhaust Pipe
      (0 reviews)
      # 20554895
      Audi A4 1.8L 1999, Front Exhaust Pipe by Bosal®. This pipe is engineered to meet OE specs to ensure precise, factory-like fit, performance, and reliability. This part features a direct fit design allowing for ease of installation....
      Stainless or aluminized steel construction for durabilityPrecision-manufactured for easy fitment
      $64.40 - $83.88
    • Bosal® Exhaust Washer
      (0 reviews)
      # 20553868
      Audi A4 1.8L 1999, Exhaust Washer by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $0.42
    • Bosal® Manifold Bolt
      (0 reviews)
      # 20553908
      Audi A4 1.8L 1999, Manifold Bolt by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get OE-quality...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $3.16
    • Bosal® Manifold Nut
      (0 reviews)
      # 20553740
      Audi A4 / A4 Quattro 1.8L 1999, Manifold Nut by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $3.34
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 40584393
      Audi A4 / A4 Quattro 1999, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $7.47 - $15.88
    • Beck Arnley® Exhaust Manifold Gasket
      (0 reviews)
      # 35821208
      Audi A4 / A4 Quattro 1999, Exhaust Manifold Gasket by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import...
      OE quality products from top original equipmentTop quality materials
      $10.42 - $11.27
    • AJUSA® Exhaust Manifold Gasket
      (0 reviews)
      # 23005341
      Audi A4 / A4 Quattro 1.8L 1999, Exhaust Manifold Gasket by AJUSA®. These gaskets seal components in the intake and exhaust systems of the vehicle such as the intake manifold, intake plenum, and exhaust manifold to the engine or...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $7.00
    • Victor Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 24054945
      Audi A4 / A4 Quattro 1999, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But...
      $8.38
    • Bosal® Pipe Connector
      (0 reviews)
      # 20554932
      Audi A4 1999, Pipe Connector by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get OE-quality...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $16.20 - $21.24
    • Walker® Clamp
      (1 reviews)
      # 18159230
      Audi A4 1999, Clamp by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories,...
      Makes installation quick and easyOptimal OE-style fit and quality
      $1.57 - $1.74
    • Walker® Gasket
      (0 reviews)
      # 18135639
      Audi A4 L4 1999, Gasket by Walker®. Material - Fiber Material and Metal Laminate, 3 Bolt Style, 0.058" Thickness, Bolt Hole Center to Center Distance - 2.89", Bolt Hole Diameter - 0.34", Port Dimensions - 2.27" L x 2.27" W, 1...
      Makes installation quick and easyOptimal OE-style fit and quality
      $6.50
    • Febi® Exhaust Nut
      (0 reviews)
      # 8392524
      Audi A4 / A4 Quattro 2.8L 1999, Exhaust Nut by Febi®. Note: Shouldered (8x12mm) Self Locking. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety...
      $0.80
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 19064211
      Audi A4 / A4 Quattro 1999, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $8.30
    • Eberspaecher® Exhaust Clamp
      (0 reviews)
      # 7800633
      Audi A4 1999, Exhaust Clamp by Eberspaecher®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you waste your time...
      $17.99 - $22.01
    • Eberspaecher® Exhaust Hanger
      (0 reviews)
      # 53347490
      Audi A4 / A4 Quattro 1999, Exhaust Hanger by Eberspaecher®. Note: Middle Muffler and Front Mounting Position on Rear Muffler. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should...
      $9.45
    • Vaico® Exhaust Hanger
      (0 reviews)
      # 8041901
      Audi A4 1999, Exhaust Hanger by Vaico®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you waste your time and...
      $18.48
    • Vemo® Exhaust Gasket
      (0 reviews)
      # 7901422
      Audi A4 / A4 Quattro 2.8L 1999, Exhaust Gasket by Vemo®. Note: Exhaust Manifold to Header Pipe. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety...
      $4.07
    • Eastern® Universal Fit Catalytic Converter
      (0 reviews)
      # 54547007
      Audi A4 1999, Universal Fit Catalytic Converter by Eastern Catalytic®. Keep your exhaust emissions within specifications and your vehicle running in top condition with this quality product. Made of stainless steel, the catalytic...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $64.60 - $166.67
    • Ansa® Muffler
      (0 reviews)
      # 7771170
      Audi A4 Quattro 90.3mm 1999, Muffler by Ansa®. Position: Center. Middle. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but...
      $403.71
    • Flowmaster® 60 Series Delta Force Stainless Steel Race Muffler
      (0 reviews)
      # 3146020
      Universal 60 Series Delta Force Stainless Steel Race Muffler by Flowmaster®, MODERATE SOUND, 4" Offset Inlet / 4" Offset Outlet, 22" Length. These are the most powerful and the quietest professional race mufflers available.
      Race Proven TechnologyNoticeable Sound Reduction Compared to Open Headers
      $197.26
    • Flowmaster® Pro Series Outlaw™ Race Muffler
      (0 reviews)
      # 62419096
      Universal Pro Series Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. Inlet / Outlet Position: Center. Outlet Diameter: 3". Body Height: 5". Body Width: 5". Body Length: 9". These mufflers are very small and lightweight....
      Race Proven TechnologyPure Race Muffler
      $89.00
    • Flowmaster® 60 Series Delta Flow™ Muffler
      (0 reviews)
      # 897052
      Universal 60 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, MILD SOUND, 2.25" Center Inlet / 2.25" Center Outlet, 5" Thick x 10" Wide x 13" Case Length x 19" Overall Length. The 60 Series increases horsepower and...
      Stainless Steel ConstructionDyno Tuned For Maximum Performance
      $131.18
    • MagnaFlow® Glass Pack Red Coated Aluminized Steel Muffler
      (0 reviews)
      # 61459909
      Universal Glass Pack Red Coated Aluminized Steel Muffler by MagnaFlow®. The Glass Pack Mufflers have the same high performance optimizing, straight-through design as the more expensive MagnaFlow mufflers. They are made in...
      Red Coated 100% aluminized steelNon-fiberglass acoustic packing material
      $35.14 - $51.26
    • Borla® S-Type™ Stainless Steel Round Muffler
      (12 reviews)
      # 25728287
      Universal S-Type™ Stainless Steel Round Muffler by Borla®. Get increased performance and the aggressive sound of power with this Universal S-Type Muffler. This is the same style austenitic stainless steel straight through muffler...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $175.99
    • Borla® XR-1™ Multicore Stainless Steel Race Muffler
      (0 reviews)
      # 959705
      Universal XR-1™ Multicore Stainless Steel Race Muffler by Borla®. The Borla XR-1 Multi-Core Muffler was developed on the race track to quiet the most severe engine noise without restricting power. They work so well that they're...
      The most possible exhaust flow in a muffler for maximum performanceQuiets the most severe engine noise, leaving a pronounced sound of power
      $244.99 - $469.99
    • Borla® Heavy Duty Stainless Steel Round Muffler
      (0 reviews)
      # 25728296
      Universal Heavy Duty Stainless Steel Round Muffler by Borla®, 3" Center Inlet / 3" Center Outlet. Get increased performance and the aggressive sound of power with this Heavy Duty Stainless Steel Round Muffler. This muffler includes...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $209.99
    • Gibson® CFT Superflow™ Oval Muffler
      (1 reviews)
      # 2060024
      Universal CFT Superflow™ Oval Muffler by Gibson®. Get optimum usable power and a deep powerful sound with a Gibson CFT Superflow Muffler. The CFT Superflow has one of the lowest restriction ratings of any muffler on the market,...
      Chambered and louvered design for increased exhaust flowDirectional louvered tuning ports for maximum exhaust flow
      $85.99 - $137.66
    • Gibson® SFT Superflow™ Round Muffler
      (2 reviews)
      # 2060137
      Universal SFT Superflow™ Round Muffler by Gibson®. Get increased exhaust flow for more power and great sound with a Gibson SFT Superflow Muffler. The SFT Superflow has one of the lowest restriction ratings of any muffler on the...
      Baffled and chambered structure for increased exhaust flowStraight through design increases exhaust flow
      $93.78 - $291.94
    • Gibson® Race Muffler
      (0 reviews)
      # 26542951
      Universal Race Muffler by Gibson®. Inspite of the large host of engineers and technicians, Gibson Performance has not lost its commitment to building cost-effective exhaust systems that deliver more performance for less spendings....
      Heavy Duty Mandrel Bent Tubing50 State Emissions Llegal
      $172.81
    • Gibson® 8" Round Muffler
      (0 reviews)
      # 26542948
      Universal 8" Round Muffler by Gibson®, 3.5" Center Inlet / 3.5" Center Outlet, 24" Length. Get increased exhaust flow for more power and great sound with a Gibson Muffler. The straight through, baffled and chambered design gives...
      Baffled and chambered structure for increased exhaust flowImproved low and mid-range performance
      $183.55 - $199.29
    • MBRP® Installer Series™ Round Muffler
      (0 reviews)
      # 3724354
      Universal Installer Series™ Aluminized Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you...
      Round form factor for tight spots16GA aluminized steel
      $124.99 - $169.99
    • MBRP® Pro Series™ T304 Stainless Steel Round Muffler
      (0 reviews)
      # 14446428
      Universal Pro Series™ T304 Stainless Steel Round Muffler by MBRP®. Your car is for show and go; add a little show with this polished T304 stainless steel muffler from MBRP. The mirror finish won’t ever peel, flake or corrode....
      Dual-core designPolished T304 stainless
      $224.99 - $244.99
    • MBRP® XP Series™ Stainless Steel Round Muffler
      (1 reviews)
      # 3724348
      Universal XP Series™ T409 Stainless Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you want...
      Round form factor for tight spotsPerformance or milder tone
      $95.23 - $224.99
    • MBRP® Black Series™ Round Muffler
      (0 reviews)
      # 3724351
      Universal Black Series™ Black Aluminized Steel Round Muffler by MBRP®. Black is the new chrome, so here’s a chance to build an all-black exhaust system perfect for your “murdered-out” custom car. Constructed of Aluminized...
      Spiral louver straight-through designHigh density packing ensures long life
      $149.99 - $169.99
    • MBRP® Resonator
      (0 reviews)
      # 3746758
      Universal Resonator by MBRP®. This resonator will remove freeway drone without adding backpressure to your exhaust system. You’ll appreciate the classic MBRP sound when you use this resonator.
      Straight-through designWill never corrode
      $104.99 - $159.99
    • aFe® Mach Force XP Stainless Steel Oval Muffler
      (0 reviews)
      # 4395697
      Universal Stainless Steel Oval Muffler by aFe®. You'll get increased performance and improved throttle response when you install the aFe Universal Fit 409 Stainless Steel Performance Muffler. This muffler has a deep, throaty,...
      Increased performanceImproved throttle response
      $125.00 - $135.00
    • aFe® Mach Force XP Stainless Steel Round Muffler
      (0 reviews)
      # 4372324
      Universal Stainless Steel Round Muffler by aFe®, 30" Overall Length x 8" Diameter. You'll get increased performance and improved throttle response when you install the aFe Universal Fit 409 Stainless Steel Performance Muffler. This...
      Increased performanceImproved throttle response
      $150.00 - $170.00
    • Weapon-R® Black Muffler
      (0 reviews)
      # 26065987
      Universal Black Muffler by Weapon-R®. This muffler is a part of Weapon-R’s Inter-Lock Universal Muffler System. This system allows the length and style of the Exhaust Tip to be changed.
      Fits most cars and trucksMade of Stainless Steel
      $140.00



    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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    1999 Audi A4 Models
    • 1999 Audi A4 Avant Performance Exhaust Systems
    • 1999 Audi A4 Base Performance Exhaust Systems
    • 1999 Audi A4 Quattro Avant Performance Exhaust Systems
    • 1999 Audi A4 Quattro Base Performance Exhaust Systems