Product Specifications
3-Inch Catless Downpipe for 1999–2006 Audi TT 8N and 2000–2004 Audi S3 8L 1.8T
This Flashark two-piece catless turbo downpipe replaces the factory downpipe and catalytic-converter section with a larger stainless-steel exhaust path. It is designed for the listed front-wheel-drive Audi TT 8N 1.8T applications and all-wheel-drive Audi S3 8L 1.8T applications. The less-restrictive path is intended to support quicker turbo response and a deeper, more aggressive exhaust note.
A braided flex section helps absorb engine movement and exhaust vibration, and oxygen-sensor ports allow the original sensors to be transferred. Check your vehicle's drivetrain and both exhaust connections before ordering.
Specifications
| Specification | Details |
|---|---|
| Product type | Catless turbo downpipe |
| Main pipe diameter | 3 inches / 76 mm |
| Outlet connection | Approximately 2.3 inches; verify against the receiving exhaust connection |
| Material | Stainless steel |
| Catalytic converter | None; catless |
| Configuration | Two-piece downpipe assembly |
| Installation | Professional installation recommended |
Key Features
- 3-inch main pipe: Provides a larger exhaust path than the restrictive factory downpipe.
- Catless design: Removes the factory catalytic-converter restriction for maximum exhaust flow in permitted off-road and competition applications.
- Stainless-steel construction: Designed to withstand turbo exhaust temperatures and resist corrosion.
- Mandrel-bent tubing: Helps maintain smoother airflow through the bends.
- Braided flex section: Helps absorb engine movement and reduce stress on exhaust connections.
- Oxygen-sensor ports: Allow the original sensors to be transferred to the new pipe.
- Two-piece configuration: Makes positioning and installation easier in limited underbody space.
- Included mounting hardware: Gaskets and the bolts, nuts and washers shown in the package image are supplied.
The less-restrictive path may reduce restriction after the turbo, support quicker response and produce a stronger, deeper exhaust sound. It can also support additional intake, exhaust and ECU upgrades. Actual gains depend on engine condition, turbocharger, exhaust system, ECU calibration and other modifications; a specific horsepower increase is not guaranteed.
What Is Included
- 1 upper downpipe section with braided flex joint
- 1 lower connector pipe
- 2 exhaust gaskets
- Mounting bolts, nuts and washers shown in the product image
Check Before Ordering
- Confirm the year, model, 1.8L turbo engine and drivetrain. The listed TT applications are FWD; the listed S3 application is AWD. For a 1999 S3 or any configuration not shown above, contact Flashark with your VIN before ordering.
- Compare the turbo-side flange, oxygen-sensor locations, outlet diameter, receiving exhaust flange and mounting points with your original system. An adapter, exhaust adjustment or professional fabrication may be required if the receiving exhaust has been modified or has a different connection. Do not install parts whose connections do not match.
- This catless product is intended for closed-course, racing or off-road use where permitted. Replacing a catalytic converter may violate applicable emissions laws. Check the rules for your vehicle and location before purchase or installation.
- A catless downpipe can trigger a catalyst-efficiency fault code or check-engine light; results vary by vehicle and ECU calibration. An ECU tune is not normally required for physical installation, but consult a qualified tuner for your specific setup.
- Professional installation is recommended. Check all parts before installation; older exhaust hardware may be seized or corroded. Test-fit and verify connections before fully installing or operating the vehicle.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
