APR Catback Exhaust System w/o valves/mufflers for Audi S3 (8V)
The APR Catback Exhaust System personalizes your vehicle’s looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished stainless-steel piping give the exhaust note an aggressive growl without any restrictions, while our Helmholtz resonator reduces unwanted frequencies. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. A cast 3” to quad 2.5” rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the system, while looking tidy from under the rear bumper. Lastly removable 4" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle.
Pour les passionnés de piste plus axés sur le poids, le son et le prix, le système APR Valveless est la configuration souhaitée. Dans cette configuration, la partie arrière de l'échappement, comprenant les silencieux et les valves, est retirée. Le poids diminue considérablement et le système devient plus agressif. Avec le downpipe d'origine en place, le système est plus bruyant et plus agressif, mais grâce à la chambre Helmholtz centrale, les vibrations sont réduites, offrant une expérience de conduite plus agréable, tout en restant agressive. Cependant, en passant au downpipe APR Race, le système se transforme et devient résolument brut avec une agressivité maximale - Le rêve ultime d'un passionné de piste.
Fonctionnalités
- Construction en acier inoxydable T304
- Soudage TIG purgé à l'argon tout au long
- Simple 3" vers quadruple 2.5" tuyau cintré brossé
- Ultra-lisse coulée 3" vers quad 2.5" séparateur
- Note d'échappement agressive et non réglementée
- Résonateur réducteur de fréquence de drone Helmholtz à travers droit fini brossé
- Embouts d'échappement polis de 4 pouces avec découpe en biais (amovibles et améliorables)
- Supports de montage robustes et précis.
- Pince de glissement de style OEM et pinces de pointe Torca AccuSeal T304
- Montage direct sur les systèmes d'échappement OEM et APR Race DP avec les tuyaux de liaison et de réduction inclus.
- Conception profil bas, adaptée aux véhicules abaissés
- Tuyauterie de diamètre plus grand par rapport à l'original.
- Des embouts de diamètre plus grand par rapport à l'original.
- Plus léger que l'original
- Conçu, développé, assemblé et contrôlé qualité en interne
- Easy to install
- Garantie à vie limitée
Aperçu du système
Notre système d'échappement utilise des tuyaux plus grands par rapport au système d'échappement d'origine, mais pèse le même poids. Nous utilisons des tuyaux de 3" de diamètre extérieur, qui se divisent ensuite en un design quadruple de 2,5". Le système d'origine utilise des tuyaux de 2,57" avant le résonateur et de 2,78" par la suite. Enfin, nos embouts d'échappement de 4" sont bien plus grands que les embouts ovales d'origine, ce qui donne à l'arrière du véhicule un look plus sportif. Le diagramme ci-dessous montre le système avec les silencieux arrière et les valves, qui peuvent éventuellement être retirés.
Mufflers and Resonators
The rear mufflers are responsible for reducing the exhaust note and do so without adding unnecessary restrictions to the system. Each unit features two straight-through perforated tubes that are tightly wrapped with stainless steel and fiberglass material. With the valves closed, the system is tamer, but once opened, the system sounds deep, throaty and aggressive! The mufflers have a beautiful brushed finish, and are tucked high in the exhaust tunnel, making them perfect for lowered vehicles and a treat to see when looking at the vehicle from the rear.
The front resonator is responsible for eliminating unwanted sound frequencies from the cabin. This is done without introducing added restrictions to the system. Using Helmholtz technology, sound waves bounce through the chamber and back into the exhaust stream, eliminating the undesirable frequencies to make the exhaust note more pleasing. During cruise, with the valves closed, the system remains calm.
Valveless System
For the more track minded enthusiasts where weight, sound and price point all are highly desired metrics, the APR Valveless system is available. In this configuration the axle back portion of the exhaust has the mufflers and valves removed. Weight drops considerably and the system becomes more aggressive. With the factory DP in place, the system is louder and more aggressive, but thanks to the center Helmholtz chamber, drone is reduced, giving a more pleasant, yet aggressive driving experience. However, when upgrading to the APR Race DP, the system transforms and becomes unapologetically raw with maximum aggression – A true track enthusiast’s dream.
Cast Splitter
We cast the axle-back splitter to maximize the system’s performance by keeping exhaust velocity high and back pressure low. This is accomplished by gradually splitting the system from a single 3” pipe to quad 2.5” pipes. The organically shaped casting allows us to make this transition gradually as to not disturb the flow of gasses. Furthermore, as this component is visible from the rear of the vehicle, we made sure form matched function with a beautiful surface finish, TIG welding, unique bracketry and brushed, mandrel bent tubing.
Exhaust Valves
Our system features two valves that allow control of the volume of the system via the factory exhaust valve actuators. In doing so, the system can go from tame to aggressive instantly! Unlike pneumatic systems, and other common valves found in the market today, our system maintains identical OEM operation all the way down to the factory valve actuation angles. Furthermore, the system is fully compatible with exhaust remotes, allowing end users to manually open the system at the click of a button.
We cast the valve housings out of T304 stainless-steel. Internally the system uses CNC-machined T303 components and brass bushings, which have stood up to our extreme torture testing. All necessary hardware is welded into place and is designed to combat heat and vibration for years to come.
Brackets
Our brackets ensure a strong and precise fit, every time. With our design, you’ll never need to worry about the brackets sagging and losing their shape over time, or the post slipping out of the hangers. The brackets are rigid, exact in their position, fit snugly in place and are made to stand the test of time.
Tubing
We use T304 stainless steel tubing throughout. We brush and de-burr all pipes, use mandrel bending techniques to ensure the pipes keep a constant diameter throughout, and use argon-back purged TIG welding for a strong and attractive weld.
Tips
Our polished slash-cut 4” exhaust tips upgrade the rear of the vehicle dramatically. The motorsport-inspired tips tuck nicely into the factory valance, gently following the valance’s curves and demanding all the right attention in all the right places. We laser etch a small and discreet APR logo onto the top of each tip, and we use T304 stainless Torca AccuSeal clamps that bolt on with ease with hardware that rotates out of sight. Lastly, since the tips are removable, you can upgrade to any one of our optional tip designs at any time.
Clamps
Our system uses OEM-style low-profile slip clamps and T304 stainless-steel Torca AccuSeal clamps for the exhaust tips. Our clamp selection allows the system to sit high in the exhaust tunnel, as is favored by lowered vehicles, with ultimate compatibility no matter what DP you may have. The clamps make for easy swapping of the exhaust tips, and slide out of the way to make adding or removing a Race DP easy. Each connection point is strategically placed to ensure the system has minimal opportunity to rotate during install or during years of heavy driving. Finally, because there are no flanges or swedges on the pipe, fitting the system to the factory DP, APR Race DP, or other Race DP is a breeze. There’s no cutting, welding, or glaring compatibility issues, and there are no gaskets to replace.
DP Compatibility
We’ve designed our system to be 100% bolt-on with the factory exhaust DP and APR Race DP. There’s no cutting, welding, or finagling to get the system to fit. It simply bolts on thanks to the included reducer for use with the factory DP, and link pipe for use with the APR Race DP.
