2004 Kia Optima Performance Exhaust Systems

1 - 60 of 21101 of 04
show:
sort by:
    • Flowmaster® 282 Series Stainless Steel OBDII Oval Catalytic Converter
      (0 reviews)
      # 869165
      Kia Optima 2.4L 2004, 282 Series Stainless Steel OBDII Oval Catalytic Converter by Flowmaster®, 2.25" Inlet / 2.25" Outlet. 16" Length. 6.13" Width. Location: Rear Side. Includes Heat Shield. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $99.95
    • MagnaFlow® Direct Fit Catalytic Converter with Header
      (0 reviews)
      # 66580320
      Kia Optima 2.7L 2004, Direct Fit Catalytic Converter with Header by MagnaFlow®. Location: Front. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $529.74 - $530.26
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter with Header
      (0 reviews)
      # 61589119
      Kia Optima 2.7L 2004, Direct Fit Federal Pre-OBDII Catalytic Converter with Header by MagnaFlow®. 2.5" Inlet / 2" Outlet Diameter. 12.13" Wide. Without Air Tube. If your car needs replacement, install one that will get you through...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $400.94 - $412.59
    • MagnaFlow® Direct Fit OEM Grade Catalytic Converter with Header
      (0 reviews)
      # 61589118
      Kia Optima 2.7L 2004, Direct Fit OEM Grade Catalytic Converter with Header by MagnaFlow®. 12.13" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check and give you more...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $459.75 - $471.43
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 62247165
      Kia Optima 2004, 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...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $407.92 - $527.72
    • MagnaFlow® Direct Fit California OBDII Rear Catalytic Converter with Header
      (0 reviews)
      # 22208232
      Kia Optima 2.7L 2004, Direct Fit California OBDII Catalytic Converter with Header by MagnaFlow®. 12.13" Wide. Location: Rear. If your car needs replacement, install one that will get you through the smog check and give you more...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $518.59
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 61589116
      Kia Optima 2004, Direct Fit Federal OEM Grade 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...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $339.30 - $468.89
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61589117
      Kia Optima 2004, Direct Fit Federal Pre-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...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $260.85 - $374.60
    • Bosal® Rubber Mounting
      (0 reviews)
      # 20570097
      Kia Optima 2004, 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
      $3.76 - $4.78
    • Dorman® Exhaust Manifold with Integrated Catalytic Converter
      (0 reviews)
      # 62543405
      Kia Optima 2.7L Without CARB Compliant 2004, Exhaust Manifold with Integrated Catalytic Converter by Dorman®, 1 Piece. Material: Cast Iron. Packaging Type: Box. Shape: Round. Color: Cast. Combined Manifold and Converter Assembly....
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $309.82 - $310.34
    • Walker® Exhaust Manifold with Integrated Catalytic Converter
      (0 reviews)
      # 8740022
      Kia Optima V6 2004, Exhaust Manifold with Integrated Catalytic Converter by Walker®. This component is constructed for your vehicle’s specific emissions requirements and designed to meet EPA regulations. The part features the...
      Constructed to meet your vehicle’s specific emissions requirements49-State legal and 50-State legal catalytic converters are available
      $323.53 - $350.31
    • Walker® Direct Fit Catalytic Converter
      (0 reviews)
      # 35474807
      Kia Optima 2004, 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 meet...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $220.45 - $333.30
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 35474814
      Kia Optima 2004, 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 - $116.76
    • Bosal® Catalytic Converter
      (0 reviews)
      # 20570125
      Kia Optima 2004, 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
      $226.56 - $325.53
    • Eastern® Direct Fit Catalytic Converter
      (0 reviews)
      # 17573828
      Kia Optima 2004, 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
      $210.57 - $364.62
    • Eastern® Universal Fit Rear Catalytic Converter
      (0 reviews)
      # 17579053
      Kia Optima without Air Tube 2004, Universal Fit Rear Undercar Catalytic Converter by Eastern Catalytic®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one,...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $45.48 - $64.60
    • DEC® Catalytic Converter and Pipe Assembly
      (0 reviews)
      # 64458938
      Kia Optima 2.4L 2004, Catalytic Converter and Pipe Assembly by DEC®. Engine pipe with converter. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic...
      Direct fitMade from a heavy duty stainless steel outer shell
      $278.78
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 64463852
      Kia Optima 2004, 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 stainless...
      Direct fitMade from a heavy duty stainless steel outer shell
      $212.40 - $545.75
    • DEC® Undercar Direct Fit Catalytic Converter
      (0 reviews)
      # 64463857
      Kia Optima 2.7L 2004, Undercar 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...
      Direct fitMade from a heavy duty stainless steel outer shell
      $342.20
    • Walker® Quiet-Flow™ Muffler
      (0 reviews)
      # 18163514
      Kia Optima 2004, Quiet-Flow™ Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 19" L x 11" W x 5.5" H, Oval Shape, Inlet Diameter - 2" ID, Outlet Diameter - 2" OD, Inlet Connection Type - Pipe...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $98.24
    • Walker® Resonator
      (0 reviews)
      # 35474792
      Kia Optima 2004, Resonator 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 using...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $52.34
    • Bosal® Rear Muffler
      (0 reviews)
      # 20552862
      Kia Optima 2.7L 2004, Rear 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...
      Designed to deliver ultimate performance and a quality OE-style soundAluminized steel construction for maximum durability
      $144.47
    • Walker® Intermediate Pipe
      (0 reviews)
      # 18158056
      Kia Optima 2004, Intermediate Pipe by Walker®. Finish - Aluminized, 49.5" Overall Length, 1 Inlets, Inlet Connection Type - 2 Bolt Welded Flange, 1 Outlets, 2" Outside Outlet Diameter, Outlet Connection Type - Pipe Connection, 1...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $25.42
    • Donga® Exhaust Manifold Gasket
      (0 reviews)
      # 7851104
      Kia Optima 2.4L 2004, Exhaust Manifold Gasket by Donga®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before...
      $8.91
    • Ishino® Exhaust Flange Gasket
      (0 reviews)
      # 8287468
      Kia Optima 100.0mm 2004, Exhaust Flange Gasket by Ishino®. Position: Front. Note: 3 Bolt Hole, Single Hole Exhaust Pipe Connecting Exhaust Manifold to Front Header.Is your vehicle feeling down on power? Do you see dark puddles on...
      $10.38
    • Ishino® Exhaust Manifold Gasket
      (0 reviews)
      # 8287855
      Kia Optima 100.0mm 2004, Exhaust Manifold Gasket by Ishino®.Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before...
      $8.15
    • Keukdong® Exhaust Manifold Gasket
      (0 reviews)
      # 7798521
      Kia Optima 2.7L 2004, Exhaust Manifold Gasket by Keukdong®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before...
      $17.51
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 20570088
      Kia Optima 2004, Exhaust Flange Gasket 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
      $5.12 - $6.66
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 19061782
      Kia Optima 2004, 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, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $13.60 - $15.33
    • Beck Arnley® Exhaust Manifold Gasket
      (0 reviews)
      # 35840348
      Kia Optima 2004, 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 vehicles in...
      OE quality products from top original equipmentTop quality materials
      $14.46 - $16.51
    • AJUSA® Exhaust Manifold Gasket
      (0 reviews)
      # 23010497
      Kia Optima 2004, 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 other components....
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $16.00 - $24.44
    • Victor Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 24160239
      Kia Optima 2004, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto...
      $15.58 - $23.14
    • Victor Reinz® Catalytic Converter Gasket
      (0 reviews)
      # 24160219
      Kia Optima 2004, Catalytic Converter 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 before...
      $3.92 - $11.34
    • Walker® Gasket
      (0 reviews)
      # 18140341
      Kia Optima 2004, Gasket 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...
      Makes installation quick and easyOptimal OE-style fit and quality
      $4.42 - $15.10
    • Walker® Insulator
      (0 reviews)
      # 18150577
      Kia Optima 2004, Insulator 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...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.13 - $6.73
    • Walker® U-Bolt Clamp
      (1 reviews)
      # 18129849
      Kia Optima 2004, U-Bolt Clamp by Walker®. Heavy Duty Clamp Type, Hex Nut Type, 2" Diameter, 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with...
      Makes installation quick and easyOptimal OE-style fit and quality
      $2.05
    • Auto 7® Exhaust Manifold Gasket
      (0 reviews)
      # 21497240
      Kia Optima 2004, Exhaust Manifold Gasket by Auto 7®. An exhaust leak at the manifold can cause noise, poor engine performance, and even engine damage, and may even allow deadly CO to enter the cabin. Auto 7 has the quality parts to...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $8.50
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 19069273
      Kia Optima 2004, 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, the gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $5.67 - $18.34
    • Victor Reinz® Exhaust Pipe Connector Gasket
      (0 reviews)
      # 24042249
      Kia Optima 2.7L 2004, Exhaust Pipe Connector Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Perforated Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local...
      $3.92
    • Victor Reinz® Exhaust Pipe to Manifold Gasket
      (0 reviews)
      # 24042850
      Kia Optima 2.7L 2004, Exhaust Pipe to Manifold Gasket by Victor Reinz®, Use 2 per Car. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the...
      $8.63
    • Keukdong® Exhaust Gasket
      (0 reviews)
      # 7792907
      Kia Optima 2004, Exhaust Gasket by Keukdong®. Position: Front and Rear. Note: This Gasket fits both Ends of the Center Muffler - Which also Connects to the Rear Muffler - Two Hole Gasket. Is your car noisier these days? Can you...
      $9.43
    • Ishino® Exhaust Gasket
      (0 reviews)
      # 8287703
      Kia Optima 2.7L 2004, Exhaust Gasket by Ishino®. Note: Off the Exhaust Manifold - Two Hole Gasket. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for...
      $6.18
    • PaceSetter® Direct Fit Catalytic Converter
      (0 reviews)
      # 66244502
      Kia Optima 2.4L 2004, Direct Fit Catalytic Converter by PaceSetter®, 1 Piece. 01-04 Santa Fe/99-05 Sonata/01-05 Optima 2.4L. Direct Fit Converter.
      $259.95
    • 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



    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...
    Popular Popular Products
    2004 Kia Optima Models
    • 2004 Kia Optima EX Performance Exhaust Systems
    • 2004 Kia Optima LX Performance Exhaust Systems