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Exhaust Systems

An exhaust system allows your engine to breathe more freely. More power is created by allowing the engine to allow exhaust gas to flow without much restriction. The essential component to increasing horsepower/torque is by increasing piping size (diameter). Most exhaust systems are designed the same way, the differences come in piping diameter as well as the muffler canister style. Below are the different components of an exhaust:

Header (Exhaust Manifold) - This item is what is connected directly to the engine and is the first part of the full exhaust system. As headers are changed, the main component different to stock would be the piping size. As piping is increased airflow is increased dramatically by even the most minute increase in size.

Down Pipe - This item generally attaches to the header's exit or a turbo, depending on if the vehicle is naturally aspirated or force induced. For naturally aspired motors, this item may or may not be available. Some headers have down pipes integrated into them. As for turbo-charged vehicles, this item is arguably the most essential component to giving power by increasing piping size, once again.

Catalytic Converter (Test Pipe/Resonator) - This item attaches to the down pipe or the header. This item is also, at times, integrated into the header/down pipe. The catalytic converter is the most restrictive component to an exhaust system. The catalytic converter is what makes a car "street legal" or for "off-road use only". By changing the catalytic converter to a bare metal tube, such as a test pipe or a resonator, the exhaust system will no longer restrict airflow from the engine.

Mid Pipe (B Pipe) - This item is usually where the exhaust systems seen for sale begin. Attaching to the catalytic converter, this item usually comes in stainless steel. The mid pipe goes between the catalytic converter and the rear section where the exhaust exits.

Rear Section (Muffler) - The rear section of an exhaust is where the muffler is. This would be what to look for as far as style goes in an exhaust system. Muffler tip size and canister style is a great factor in choosing an exhaust system. Some exhausts include silencers for those who do not want a loud exhaust system.


Generally, piping size is key to choosing an exhaust system. Next to piping diameter would be the muffler canister style as well as the tip size. Keep in mind, the more free flowing an exhaust system is, the louder it will become. A list of manufacturers and the products they make are listed below.


Tanabe
Medalion Touring - A refined level of performance and driveability is available in the MEDALION TOURING. The elegant, well defined appearance of MEDALION TOURING is mature, and matches the artistry of a tastefully built, highly tuned machine. Using the all new 'continuous strand' ADVANTEX packing material technology, MEDALION TOURING acheives extremely high levels of exhaust system efficiency, while maintaining a street driveable, extremely low frequency and deep tone that is well under 93db for discreet sports driving. This system requires no removeable silencer for under 93db operation at all rpms. The extremely deep, low frequency tone keeps in-cabin noise to a minimum.The full SUS304 stainless MEDALION TOURING features a slim-line oval canister, and a special dual wall, angle-cut tip. This premium quality system is for sports driving.

Medalion Concept G - CONCEPT G is an all new motorsports developed exhaust system that features high power benefits, while maintaining responsible sound levels. Using the all new 'continuous strand' ADVANTEX packing material technology, CONCEPT G acheives extremely high levels of exhaust system efficiency, while maintaining a street driveable, extremely clean sound output that is under 93db. This system requires no removeable silencer for under 93db operation at all rpms, and produces a unique, deep tone and rumble. The full SUS304 stainless CONCEPT G is designed for optimal pipe routing as well as ground clearance. It's sporty appearance and angle-cut tip is ideal for the sports car & sport compact driver. Engineered for sports car & sport compact performance.

Medalion Concept G Blue - We took turbocharged car exhaust tuning one step further in the development of the complete turbo back exhaust, CONCEPT G BLUE. This complete system includes a full SUS304 stainless downpipe and cat delete pipe that have thicker construction to withstand the heat of extreme exhaust gas temperatures. The catback portion of this system features lightweight SUS304 piping with a specialized full Inconel tip. This system maximizes flow efficiency for the largest power gains and will greatly benefit vehicles running higher amounts of boost. This system is capable of handling the flow needs of extremely modified vehicles. Tailored for turbo car driver who enjoys boost.

Ultra Medalion - Taking the benefits of the motorsports engineered SUPER MEDALION RACING one step further, extreme horsepower gains and lightweight is the goal of the Ultra Medalion. Only the highest grade titanium, which is free from impurities, is used on the Ultra Medalion. By using titanium in the main silencer sections, canister, and tip, the Ultra Medalion weighs a mere fraction of OEM exhaust systems. For maximum durability , ultra lightweight thinwall SUS304 stainless steel exhaust pipingwas developed for use with the system. For the enthusiast that is particular on having the absolute best exhaust system available, Ultra Medalion excels in all categories.

Super Medalion Hyper - High levels of driving sports enjoyment is the goal of the SUPER MEDALION HYPER. Released alongside the SUPER MEDALION RACING, the "SM Hyper" is an original design that features full SUS304 stainless construction for maximum quality and durability. Tuned specifically for the street driving enthusiast, SM Hyper was engineered for streetable gains in power and acceleration. The classic, elegant oval canister design and simple, straight cut tip product a subtle, low deep tone, and reduced sound profile suitable for street driving, without needing a silencer. The high quality of SM Hyper is only equally by that of it's performance. Tailored for all enthusiasts of driving sports.

Tuner Medalion - For those who wish to create their own custom Tanabe exhaust system, the universal TUNER MEDALION is now offered. Featuring inlet sizes ranging from 60-80mm, Tuner Medalion is perfect for any custom NA or Turbo exhaust application. Ideal for fabrication of a full catback, simple axle-back exhaust systems, or for vehicles that do not readily have a catback exhaust system available for them. Tuner Medalion is availabing is RACING or HYPER trim. Tuner Medalion Racing is a rebuildable unit that comes with a removable inner silencer. For the best custom exhaust system.

Downpipe - The Turbine Tube, also known as a downpipe, extracts the most power from turbocharged vehicle applications. Turbo efficiency, power and response is greatly improved. Each downpipe has an EGT Bung with cap for those who wish to monitor exhaust gas temperatures, without having to drill into their downpipe and void their warranty. Replaces pipe from turbo to the stock main catalyzer, which is kept. Best mated when used with any Tanabe catback exhaust system. Also available, the ultra efficiency Y-PIPE for vehicles with the VQ35DE engine eliminates huge restrictions found on the factory Nissan/Infiniti exhaust system piping, and provides huge horsepower gains when used with Tanabe catback exhausts.


HKS
Hi-Power/Carbon-Ti - Inspired and designed from endurance and GT racing in Japan, HKS developed its Hi-Power Exhaust system for both turbocharged and naturally aspirated applications. HKS has incorporated this new race inspired offset muffler and piping design into many street applications, which offers a greater flow and higher-PRM power gains due to the less restrictive design. This is achieved by eliminating unnecessary bends for the straightest exhaust path. For turbocharged applications, the large and smooth exhaust flow allows greater exhaust velocity for better mid-range boost response and high-RPM power. Naturally aspirated vehicles also benefit from greater exhaust flow capacity as engine tuning levels increase. Certain applications are available in a Silent Hi-Power version which has an inner silencer built into the muffler. Like Drager Exhaust systems, Hi-Power Exhaust systems are made from SUS304 stainless steel muffler and tip assemblies. Depending on the application, Hi-Power muffler tips are 96mm, 115mm and 120mm in diameter, piping diameter ranges from 55mm to 95mm. Special Edition HKS Carbon Titanium Hi-Power Exhaust systems are exclusively available for certain popular applications. These exclusive versions of the Hi-Power Exhaust consist of a carbon fiber wrapped muffler shell, titanium tip, and polished SUS304 stainless steel piping.

Titanium Racing - For 800-1000 horsepower range applications, HKS now offers the Racing Muffler system. Constructed of 102mm diameter, high-luster polished SUS304 stainless steel piping and a 170mm Titanium muffler assembly, the Racing Muffler is the lightest system (40% lighter than the race inspired Hi-Power Exhaust system) and the highest flowing exhaust system HKS offers. The muffler utilizes a slip-on/latch design that mates polished stainless steel piping and a lightweight titanium Muffler assembly. All Racing Muffler systems incorporate a 115mm-diameter tip and include a removable inner silencer for pit area use. Racing Muffler Systems are FOR OFF ROAD USE ONLY.

Drager - Designed for both turbocharged and naturally aspirated applications, the HKS Drager Exhaust system was the first of its style to incorporate a seamless muffler shell. Each system is constructed with a high-luster polished, straight-through SUS304 Stainless Steel muffler assembly with an engraved, angle cut logo tip. The Super Drager systems that are designed for turbo applications utilize either a 106mm, 120mm or 130mm diameter tip and up to 95mm diameter size piping. Naturally aspirated Super Drager applications utilize 60mm diameter size piping and either a 106mm or 115mm tip. The Drager II series is the evolution of the original Super Drager muffler. The new Drager II muffler incorporates a slim-line muffler, designed for added clearance and a 120mm tip that allows for an optional silencer insert to be used for additional exhaust noise suppression. Each system increases low-end torque, improves mid-range response and delivers high-end horsepower.

Drager II - Designed for both turbocharged and naturally aspirated applications, the HKS Drager Exhaust system was the first of its style to incorporate a seamless muffler shell. Each system is constructed with a high-luster polished, straight-through SUS304 Stainless Steel muffler assembly with an engraved, angle cut logo tip. The Super Drager systems that are designed for turbo applications utilize either a 106mm, 120mm or 130mm diameter tip and up to 95mm diameter size piping. Naturally aspirated Super Drager applications utilize 60mm diameter size piping and either a 106mm or 115mm tip. The Drager II series is the evolution of the original Super Drager muffler. The new Drager II muffler incorporates a slim-line muffler, designed for added clearance and a 120mm tip that allows for an optional silencer insert to be used for additional exhaust noise suppression. Each system increases low-end torque, improves mid-range response and delivers high-end horsepower.

Legamax/Sport - Legamax and Sport Exhaust Systems are designed to reduce backpressure and increase exhaust flow for greater peak power and a broader torque band. Each Legamax and Sport Exhaust application utilizes a specific muffler design and shape along with the appropriate piping diameter to maintain low-end torque while maximizing high-end horsepower. All Legamax systems are made from polished SUS304 stainless steel piping.

Turbo - Specifically engineered for turbo applications that require greater flow capacity than naturally aspirated applications, Turbo Exhaust systems use a straight through design. The increased flow characteristics offer a gain in boost pressure, boost response, a broader powerband and increases overall peak horsepower. Performance increases vary by application, with average gains of 10-25 horsepower.


Greddy
Ti-C - GReddy Racing Ti-C Cat-back Exhausts combine the design, looks and flow of our Full Racing Titanium systems with the durability, deep sound, value and large application list of our other Stainless Steel street systems. This fusion of aggressive styling and practical construction, makes this the logical choice for both Race and Street Enthusiasts. The systems are comprised of a Titanium heat-treated tip, polished stainless steel muffler, unpolished stainless steel piping. It improves high and mid-range performance while still allowing for suitable sound levels when used with the included tuned Tri-mounted Silencer*. *Most applications below 92db, with all under 94db. The large list of applications include 80mm piping for Turbo applications and 50-60-70mm for Normally Aspirated vehicles. (usually 60mm)

SP2 - In our classic Street Performance Ver. 2, or SP2, we have the ultimate in show quality shine, superior flow and excellent sound quality. The full stainless steel SP2 has the same classic tuned straight-though design as the other GReddy exhaust, with the add benefit of a high polished single walled SUS 304 oval muffler with SUS 430 end caps and a unique outer-curled oval GReddy slant tip. With applications for both turbo and normally aspirated cars, most SP2 follow the O.E. exhaust layout. With the use of large capacity straight-through mufflers and resonators, the SP2 offers some quietest exhaust note of any high performance systems on the market today.

G2S - The new G2 line was refined from it’s previous design to incorporate GReddy’s Global styling cues. Geared specifically for the differences in late-model European exhaust system layouts and rear valances, the new G2 utilizes dual polished 76mm beveled tips (in most cases) to better match the rear bumper of modern VW, Audi & other European vehicles. Furthering the Global touch to Euro tuning, GReddy incorporates tried and true features for the new G2 line, including: full stainless-steel construction, easy bolt-on installation, free flowing straight through cat-back design, and tuned exhaust tone and volume for each specific application.

EVO2 - The full stainless steel EVO2, is GReddy’s most popular cat-back exhaust style. Designed specifically for USA spec vehicles with real JDM quality, styling and performance, the full stainless steel EVO2’s tuned straight-though design offers an incomparable combination of power and sound. With applications for both turbocharged and normally aspirated vehicles, our designers carefully selected piping routing and diameters to link the offset muffler section. When installed on the vehicle, it provides the look of a small race muffler, while still providing excellent sound suppression for daily commutes and deep throaty tone under full accelerations and competition use.

EVOTT - Designed specifically for use on vehicles with aftermarket turbochargers, including but not limited to GReddy bolt-on kits, the new GReddy EVO TT is a hybrid version of GReddy’s popular EVO2 cat-back exhaust system. It was created specifically to enhance non-turbocharged vehicles that have been converted to turbocharged vehicles. Similar to the full stainless steel EVO2, the EVO TT is designed with larger diameter piping, then normally found on non-turbo charged applications. This will optimize performance in its boosted form, while still providing effective sound suppression when used with a turbo. Finishing off the high flow EVO TT is a heat-treated, inner curled GReddy Titanium Tip. Applications are available to enhance most GReddy Bolt-on and other aftermarket turbo kits.

DT - Designed as an economical and versatile alternative to our famous Cat-back exhaust line, the new Dynamic Tune Muffler (DT-Muffler) series brings new options to performance Axle-back exhaust systems. This full stainless steel one piece system bolts onto OEM or factory position piping and then divides into dual inlets on our straight-through muffler. Exiting the oval muffler are our unique two angled round tips, measuring 80 and 42mm. The smaller tip can be capped to allow for sound and flow adjustments. This can change the tone and drivablity throughout the operating range.

Racing Titanium - Known for our famous cat-back street-style exhaust, GReddy got its start over 30 years ago in racing exhausts. Therefore the GReddy Racing Titanium line is a true race inspired exhaust system. Based on our popular JDM Power Extreme II style, the Racing Titanium is very free flowing, having large diameter piping and minimal bends. As a true PRO system, the outer construction is full Titanium, from the flanges to the mandrel-bent piping, to the muffler canister and flamed outer-curled Tip. Being full Titanium, a 10lb cat-back system can save 50+lbs of weight for some vehicles.


APEX'i
N1 ExTi - The N1 Muffler series has evolved once again! The N1 ExTi (Expert Titanium) offers all the performance and quality of our race proven N1 Exhaust systems plus the incorporation of an ultra light weight titanium muffler section. For years, the N1 Titan has only been available to our customers in Japan; at A'PEX USA we are very pleased to be able to offer this muffler to the US tuning market under the N1 ExTi name. The N1 ExTi utilizes full stainless steel piping mated to an immaculately constructed Titanium N1 Muffler. The muffler section features a full titanium canister which discharges through an adjustable length 115mm super heated (burnt) titanium tip. The 5 step adjustment range of the finisher tip is designed to allow users with aero kits the ability to extend or retract the tip to meet the dimensions of the rear bumper. The N1 ExTi stands as a true lightweight version of the N1 exhaust, successfully blending form with function.

NOIR Muffler - The NOIR (nwär) muffler was developed specifically with the diehard street car enthusiast in mind. Over the years it has became increasingly difficult to street drive a modified “sport compact” in some parts of the country. Staying low profile is an important issue to many street tuners who don’t want to deal with the negative stigma sometimes associated with modified imports. The NOIR Muffler is designed to be quieter than a typical racing exhaust while its stealthy black coating minimizes your chances of generating attention from unwanted sources. The WS style canister and 100mm tip finish off the system with a classic sporty look without being over the top.

GT Spec - The GT Spec Muffler is the ultimate in high power exhaust systems. Previously available only for select GT class vehicles, we are now proud to offer the GT Muffler for a wide variety of popular vehicles. The GT System is a FULLY polished stainless steel exhaust utilizing a massive 95mm* (3.74 inches) piping diameter channeled through a 114.3mm (4.5 inch) tip. A'PEX proudly stands as one of the only manufacturers in Japan to own and operate a 95mm mandrel pipe bender. An A'PEX Silencer is included to suppress exhaust sound output for street applications. By using even lighter SUS 304 stainless steel piping to save weight, the GT Series muffler stands as the benchmark of power, craftsmanship, and design. Each muffler incorporates immaculate robotic TIG welds as well as hand crafted welding.

N1 Evolution - The N1 Evolution combines all the racing heritage and proven performance of the original N1 muffler but raises the ante by adding light weight, fully polished stainless steel piping. This is the ultimate N1 exhaust system. Mandrel bent, full stainless steel construction provides maximum power gains and resistance to rust or other damage caused by weathering. Like the original N1, the N1 Evolution uses the minimum amount of pipe bends to allow for greater exhaust flow. The N1 Evolution was created for those who are looking for something one step further than the classic N1 design. Available only for a select amount of vehicles, the N1 Evolution stands as a brilliant testament to exhaust system fabrication.

PS Revolution - Designed for hard tuned, street driven vehicles, the PS Revolution's exhaust pressure activated "active valve" system provides the hardcore enthusiast with the best of both worlds. The retracting valve is engaged and disengaged based upon exhaust gas pressure. This revolutionary new muffler design allows high powered street cars to maintain a tolerable, and legal, exhaust note at idle and light throttle acceleration while completely disengaging during high throttle, high load situations. Never before has an exhaust system seamlessly fused the streetability of a stock exhaust system and the performance of a low restriction racing exhaust. Like all A'PEX exhaust systems, the PS Revolution features a high quality SUS 304 stainless steel muffler. Being the standard for performance and reliability, the PS Revolution uses full stainless steel mandrel bent piping for added strength and minimum weight.

WS - The WS Exhaust series is the A'PEX answer to the ultimate street muffler system with all around performance. The canister is made of the highest grade polished SUS304 stainless steel while the mandrel bent piping consists of high temperature, titanium particle coated mild steel. This muffler has always been the standard for aftermarket street exhaust systems. The oval canister houses a newly designed rolled tip for an extremely high class finish. Interior construction has been fine tuned for even more low to mid-range power. Countless magazine dyno tests have proven the WS exhaust to be one of the best all around exhaust systems on the market. As always, all A'PEX cat back exhaust systems come complete with all necessary hangers, nuts, bolts, and gaskets. The World Sport muffler is for the performance enthusiast who has more on their minds than just pure power. This system is designed to provide excellent low and mid range power without excessive noise. The sporty, yet elegant look is made possible by using a polished SUS 304 stainless steel muffler, 60mm titanium particle powder coated mild steel piping, paired with a 100mm (3.93 inch) polished tip. Robotic TIG welds along with precise hand crafted welds ensure maximum longevity and performance. The WS system possesses all of the motorsports passion and intensity associated with A'PEXi products. This system is ideal for the daily driver car of an enthusiast, or for vehicles that want the high class sporty look without the noise.

GT Downpipe - The A'PEXi Down Pipe is the pipe on turbo vehicles that connects the turbine exhaust housing to the catalytic converter. Although short in length, the A'PEXi downpipes provide incredible amounts of power because the piping diameter is enlarged so early on the exhaust system. This enlargement in diameter results in a dramatic increase in exhaust flow capacity as well as a significant reduction of back pressure. The GT spec Down Pipes are constructed of fully polished SUS 304 stainless steel.



*All descriptions for exhaust systems derived from manufacturers directly.