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SKU: HS08SW1DOC
Invidia 08+ Subaru WRX / 05-09 STI / 02 Legacy High Flow Cat Extra O2 Bung
The Invidia HS08SW1DOC high flow catalytic converter downpipe fits 2008+ Subaru WRX, 2005-2009 STI, and 2002 Legacy models with precise compatibility up to 2014 variants. This direct bolt-on upgrade uses a metallic substrate cat to reduce backpressure for sharper throttle response and added horsepower across the RPM range. Crafted from 3-inch T304 stainless steel piping with an extra pre-welded O2 bung, it supports wideband sensor installs for accurate air-fuel monitoring and reliable exhaust flow.
Key Features
- T304 Stainless Steel Construction: Resists rust and withstands high heat for lasting durability in demanding conditions.
- 3-Inch Mandrel-Bent Piping: Delivers smooth exhaust flow without restrictions to handle increased boost and power output.
- High Flow Metallic Catalytic Converter: Processes emissions effectively while increasing volume for measurable power gains over factory setup.
- Extra Pre-Welded O2 Bung: Allows easy wideband oxygen sensor placement for real-time air-fuel ratio tuning and monitoring.
- Direct Bolt-On Fitment: Aligns with factory turbo outlet and midpipe using included gaskets, studs, and nuts for hassle-free replacement.
Product Notes
- Lightweight design at 11 pounds reduces rotational mass and engine bay heat buildup.
- Includes stainless steel gaskets, studs, and nuts for secure, leak-free sealing.
- Ships in protective 40 x 10 x 10 inch cardboard box to arrive undamaged.
Installation Notes
- Professional installation recommended.
- Bolts directly to stock turbo outlet and midpipe or compatible aftermarket cat-back exhausts.
- ECU tune required to adjust fuel maps, prevent check engine lights, and achieve full gains.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002 | Subaru | Legacy | |
| 2005-2006 | Subaru | Legacy | GT |
| 2008-2014 | Subaru | Impreza | WRX |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2009-2010 | Subaru | Impreza | 2.5 GT |
| 2009-2014 | Subaru | Impreza | WRX Premium |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2011-2014 | Subaru | Impreza | WRX STI Limited |
Why Choose Invidia?
- Trusted brand for performance exhaust systems serving Subaru enthusiasts worldwide.
- Employs premium materials rigorously tested for street and track performance.
- Engineers parts with exact fitment for seamless integration on target vehicles.
Frequently Asked Questions
-
Q: Does this fit 2011-2014 WRX STI hatchback models?
A: Yes, compatible with all 2008-2014 Subaru Impreza WRX STI models including Limited and Special Edition with EJ257 turbo. -
Q: What material and pipe size are used?
A: Built from T304 stainless steel with 3-inch mandrel-bent tubing and metallic core high flow catalytic converter. -
Q: Is a tune required after installation?
A: Yes, custom ECU tune recommended to refine air-fuel ratios, avoid check engine lights, and release full power potential.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Sturdy cardboard box 40 x 10 x 10 inches
- Weight: 11 lbs
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