AWE Tuning AWE3015-43020 Touring Edition Cat-Back Exhaust 2008-2016 Audi B8 B8.5 A4 Quattro 2.0T Quad Diamond Black Tips 50-State Legal

The AWE3015-43020 is the AWE Touring Edition Cat-Back Exhaust for the B8 and B8.5 Audi A4 2.0T, built for Sedan and Avant owners from model years 2008 through 2016 who want a genuine performance upgrade without sacrificing daily civility. Featuring quad 90mm Diamond Black double-walled slash-cut tips, dyno-proven gains of +8 to +9 horsepower and +6 to +7 lb-ft of torque at the crank, and AWE's patented 180 Technology drone-elimination system, the AWE3015-43020 delivers a sophisticated, war-cry wail at full throttle with absolute silence at cruise. It is 50-state legal, requires no tune, carries an AWE No Check Engine Light Guarantee, and is backed by AWE's Lifetime Exhaust Warranty. Every AWE3015-43020 is hand-crafted from U.S.-sourced T304L stainless steel and manufactured in-house at AWE's facility in Horsham, Pennsylvania.

What's Included

• AWE Touring Edition Cat-Back Exhaust system (AWE3015-43020), complete from cat-back to tips
• Quad 90mm (3.50in) Diamond Black double-walled slash-cut adjustable exhaust tips with engraved AWE logo
• Stainless steel center muffler with OEM-grade stainless steel wool and German composite packing
• Helmholtz drone-eliminating resonators and AWE 180 Technology resonator
• All factory-replacement mounting hardware and OEM-style hangers
• AWE Fitment Guarantee documentation

Note: A quad-tip rear valance conversion is required for vehicles fitted with a non-S-Line bumper. The quad-tip rear valance is not included and is sold separately by AWE. Confirm your bumper style before ordering.

AWE 180 Technology: Patented Drone Elimination

Highway drone is the enemy of every aftermarket exhaust on a turbocharged four-cylinder. AWE solved this problem permanently with 180 Technology, a patented resonator system first deployed in 2010 on the Audi B8 S4 3.0T and now the defining feature of every AWE Touring Edition exhaust.

As exhaust gases flow through the system, they pass through strategically located ports and into precision-engineered reflection chambers inside the 180 Technology resonator. Sound waves carried by those gases bounce off the chamber walls. AWE's acoustic engineers tune the exact size and position of the ports and chambers for each specific vehicle application, controlling the precise moment at which reflected sound waves re-enter the main exhaust flow. The timing is calibrated to generate a frequency exactly 180 degrees out of phase with the problematic drone tone. The two opposing frequencies cancel each other out, eliminating drone completely, while every desirable frequency, the crack, the wail, the deep exhaust note, passes through unaffected.

Paired with Helmholtz resonators as an additional layer of frequency control, the result is a system that sounds aggressive and purposeful at full throttle, yet remains completely civil at highway cruise speeds. No valve, no electronics, no compromise.

Quad Diamond Black Tips

This exhaust exits through four 90mm (3.50-inch) Diamond Black double-walled slash-cut tips, two per side. The double-wall construction maintains a consistent finish under hard use and prevents the heat discoloration that plagues single-wall tips. Each tip is individually adjustable for depth and stagger, so fitment can be dialed in precisely to the bumper cutout. The engraved AWE logo is a subtle but unmistakable signal of what is under the car. The Diamond Black finish complements dark exterior trim packages and pairs particularly well with factory S-Line and Black Optics styling.

Vehicle Fitment

The AWE3015-43020 fits the following vehicles. Does not fit Cabriolet/Convertible body styles.

Full Specifications

50-State Legal, Warranty, and Compliance

This exhaust is 50-state legal. AWE has confirmed that it does not tamper with any emissions control or monitoring devices, making it compliant for road use in all 50 U.S. states, including California.

Every AWE3015-43020 ships with the AWE Lifetime Exhaust Warranty, covering defects in materials and workmanship for the life of the product. This warranty is consistent with protections available to consumers under the Magnuson-Moss Warranty Act. Installation of this exhaust does not void the factory vehicle warranty on unrelated components.

California Proposition 65 Warning: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Compare: AWE Touring Edition Exhaust Family for B8/B8.5 A4 2.0T

The AWE3015-43020 is one of six Touring Edition configurations available for the B8 and B8.5 Audi A4 2.0T. All six share the same T304L stainless steel construction, 180 Technology drone elimination, Lifetime Exhaust Warranty, and dyno-proven power gains. The differences are tip count and tip finish only.

For more volume and a slightly deeper tone, AWE also offers the Resonated Performance Downpipe (SKU: AWE3215-11020, sold separately, approximately $645). It replaces the factory downpipe's large resonator with a compact, free-flowing unit, increasing exhaust volume without affecting power output. It mates directly to this system and any exhaust designed for the stock downpipe.

About AWE Tuning

AWE was founded in 1991 in Horsham, Pennsylvania, as an installer of aftermarket performance parts. Over three decades, AWE grew into one of the most respected exhaust manufacturers in North America, built on in-house engineering, precision manufacturing, and an obsessive commitment to sound quality. Every AWE exhaust is engineered, designed, and hand-crafted at the Horsham facility using U.S.-sourced T304L stainless steel, CNC mandrel bending, and .065-inch wall tubing.

AWE does not outsource. Every weld, every bend, and every tip is produced under one roof. The result is consistent quality, tight tolerances, and an OEM-level fit that bolt-on competition rarely matches. AWE holds patents on its 180 Technology drone-canceling system, and the Lifetime Exhaust Warranty backs every product shipped. For B8 and B8.5 A4 owners, this exhaust represents over a decade of platform-specific development on one of the most popular Audi chassis sold in the United States.

Frequently Asked Questions

Q: Will this fit my 2013 Audi A4 Quattro Avant?
A: Yes. This exhaust fits all B8 and B8.5 Audi A4 and A4 Quattro Sedan and Avant models with the 2.0T engine, covering model years 2008 through 2016. It fits both FWD and Quattro drivetrain variants. It does not fit the Cabriolet.

Q: Do I need a tune after installing this exhaust?
A: No tune is required. This is a passive cat-back system with no valve and no electronic components. It installs and runs without any ECU modification.

Q: Will installing this exhaust trigger a check engine light?
A: No. AWE backs this system with its No Check Engine Light Guarantee. When installed correctly on a stock or AWE-modified vehicle, it will not trigger a CEL.

Q: Is this exhaust legal in California?
A: Yes. The AWE3015-43020 is 50-state legal, including California. AWE has confirmed it does not tamper with any emissions control or monitoring equipment. A California Proposition 65 warning applies; see the compliance section above for full text.

Q: Do I need to buy anything else for the quad tips to fit my car?
A: Possibly. If your A4 has a non-S-Line bumper, the factory rear valance does not have cutouts for four exhaust tips. A quad-tip rear valance conversion is required in that case and is sold separately by AWE. If your car already has the S-Line bumper with quad exhaust cutouts, this system installs directly without additional parts.

Q: How much power does this exhaust add?
A: AWE's own dyno testing shows gains of +8 to +9 horsepower and +6 to +7 lb-ft of torque at the crank over the restrictive factory exhaust. These figures are repeatable and verified on AWE's in-house dynamometer.

Q: Will there be any drone inside the cabin at highway speeds?
A: No. This system uses AWE's patented 180 Technology resonator along with Helmholtz resonators to completely eliminate highway drone. The resonators were engineered specifically for the B8 A4 2.0T's exhaust frequency profile. At cruise the cabin is quiet; at full throttle the system delivers a distinctive, aggressive exhaust note.

Q: What warranty is included?
A: This exhaust is covered by the AWE Lifetime Exhaust Warranty, protecting against defects in materials and workmanship for the life of the part. The warranty is transferable and consistent with Magnuson-Moss Warranty Act protections.

Q: Is there a Track Edition version of this exhaust for the B8 A4 2.0T?
A: No. AWE does not offer a Track Edition (non-resonated) exhaust for the B8 A4 2.0T platform. The Touring Edition is the only AWE cat-back configuration available for this application. The Track Edition line exists on other AWE platforms but was not developed for the B8 A4 2.0T.

Q: Can I pair an AWE downpipe with this system?
A: Yes. AWE offers the Resonated Performance Downpipe (SKU: AWE3215-11020, sold separately, approximately $645) for the B8 A4 2.0T. It increases exhaust volume and adds a slightly deeper tone. The AWE3215-11020 mates directly to this exhaust.

Q: How difficult is installation?
A: This is a direct bolt-on replacement for the factory cat-back system. No cutting, welding, or fabrication is required. AWE guarantees fitment. Professional installation by a qualified shop is recommended; typical installation time is one to two hours on a lift.