Will the Fabspeed Resonator Bypass X-Pipe fit my Audi S8?

Yes. The Fabspeed Resonator Bypass X-Pipe is built specifically for the D3 Audi S8 with the 5.2-liter V10, covering model years 2006 through 2009. It is a direct-fit replacement for the factory resonator section on that chassis and does not fit other A8 or S8 generations or the V8 and W12 cars.

How much power does it add?

Fabspeed recorded gains of 27 wheel horsepower and 37 ft-lbs of torque by replacing the restrictive factory resonators and opening up exhaust flow. Those numbers came from one vehicle under ambient conditions, so your results will vary with fuel, altitude, and the rest of your setup, but owners can expect a clear, repeatable improvement in response.

Does it drone on the highway?

No. The investment-cast X-pipe is designed to balance exhaust pulses between both banks, which deepens and sharpens the V10's voice without the constant cabin drone that cheaper straight pipes create. You will hear a higher, more aggressive note under throttle and a run of burbles on deceleration, while steady highway cruising stays comfortable.

Is it hard to install?

Most capable DIY owners can fit it at home. The section bolts into the existing exhaust path and needs no tuning or engine management changes, though some minor trimming of the factory system may be required for a clean fit. Many owners have it installed in an afternoon with basic hand tools and a safe way to raise the car.

What is the Fabspeed Resonator Bypass X-Pipe made from?

The Fabspeed Resonator Bypass X-Pipe is manufactured from mandrel-bent T304L stainless steel with a signature investment-cast X-pipe crossover. T304L resists heat and corrosion for the life of the car, and the mandrel bends keep the tubing diameter consistent through every curve for maximum flow. Fabspeed backs the section with its Lifetime Warranty.

Does it change the Audi S8's emissions equipment?

No. The X-pipe replaces only the factory resonator section, which shapes sound rather than controlling emissions, so the S8's emissions hardware stays in place and untouched. It is a reversible bolt-in section, and Fabspeed backs it with a Lifetime Warranty against manufacturing defects.

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Description

Fabspeed Resonator Bypass X-Pipe for D3 Audi S8

The Fabspeed Resonator Bypass X-Pipe for the D3 Audi S8 frees the Lamborghini-derived 5.2-liter V10 to breathe and sound the way it always should have. Fabspeed has built hand-finished exhaust hardware in Fort Washington, Pennsylvania for decades, and this X-pipe section carries that same workshop pedigree: mandrel-bent T304L stainless steel, a signature investment-cast X-pipe crossover, and a Lifetime Warranty behind the section. In place of the heavy, restrictive factory resonators, it adds a measured 27 wheel horsepower and 37 ft-lbs of torque while giving the S8 a deeper, more purposeful voice, higher and sharper under throttle with a layer of burbles on the overrun. For the discerning S8 owner who wants the V10 uncorked without surrendering daily comfort, it is the rare upgrade that sounds as deliberate as it is built.

Features

Adds 27whp and 37ft/lbs of tq
Improves sports car sound
Constructed from mandrel bent T304L stainless steel
Signature investment cast x-pipe for the best flow possible
Simple DIY bolt-on installation, no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed lifetime warranty

Applications

Audi S3: D3 | 2006-2010 | 5.2L V10

Notes

All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker

Frequently Asked Questions

Will the Fabspeed Resonator Bypass X-Pipe fit my Audi S8? Yes. The Fabspeed Resonator Bypass X-Pipe is built specifically for the D3 Audi S8 with the 5.2-liter V10, covering model years 2006 through 2009. It is a direct-fit replacement for the factory resonator section on that chassis and does not fit other A8 or S8 generations or the V8 and W12 cars.
How much power does it add? Fabspeed recorded gains of 27 wheel horsepower and 37 ft-lbs of torque by replacing the restrictive factory resonators and opening up exhaust flow. Those numbers came from one vehicle under ambient conditions, so your results will vary with fuel, altitude, and the rest of your setup, but owners can expect a clear, repeatable improvement in response.
Does it drone on the highway? No. The investment-cast X-pipe is designed to balance exhaust pulses between both banks, which deepens and sharpens the V10’s voice without the constant cabin drone that cheaper straight pipes create. You will hear a higher, more aggressive note under throttle and a run of burbles on deceleration, while steady highway cruising stays comfortable.
Is it hard to install? Most capable DIY owners can fit it at home. The section bolts into the existing exhaust path and needs no tuning or engine management changes, though some minor trimming of the factory system may be required for a clean fit. Many owners have it installed in an afternoon with basic hand tools and a safe way to raise the car.
What is the Fabspeed Resonator Bypass X-Pipe made from? The Fabspeed Resonator Bypass X-Pipe is manufactured from mandrel-bent T304L stainless steel with a signature investment-cast X-pipe crossover. T304L resists heat and corrosion for the life of the car, and the mandrel bends keep the tubing diameter consistent through every curve for maximum flow. Fabspeed backs the section with its Lifetime Warranty.
Does it change the Audi S8’s emissions equipment? No. The X-pipe replaces only the factory resonator section, which shapes sound rather than controlling emissions, so the S8’s emissions hardware stays in place and untouched. It is a reversible bolt-in section, and Fabspeed backs it with a Lifetime Warranty against manufacturing defects.

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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