Unitronic Turbo-Back Exhaust System for MK8 GTI
Product Information
The Unitronic Performance Turbo-Back Exhaust System for the 8Y S3® equipped with the 2.0TSI EA888 EVO4 engine is a direct bolt-on upgrade, designed to optimally eliminate unwanted restrictions in the factory exhaust system, reduce turbo lag and enhance the exhaust note. It utilizes a 5” 400cpsi ultra high output (UHOX) catalytic converter, designed in partnership with Unitronic, from our emissions partners at Global Emissions Systems Inc (GESi), as well as 3-inch T304 Stainless Steel mandrel bent tubing, high density, high temperature fiberglass wool packed muffler, multiple exhaust tip options and high quality v-band fasteners with T316 Stainless Steel flanges. These attributes combined with extensive R&D testing, help ensure perfect fitment and maximum performance, while maintaining a comfortable and unobtrusive exhaust tone inside the cabin.
Paired with Unitronic Stage 2 E85 Performance Software and other supporting bolt-ons, this Performance Downpipe helps yield up to 417HP / 426LB-FT with more to come.
Features / Benefits
- GESi 5” G-Sport UHOX 400cpsi Catalytic Converter
- Meets or exceeds local testing standards
- CFD Optimized Upper Downpipe Castings
- TIG-welded construction
- Factory catalyst placement for maximum efficiency
- Oxygen Sensor provision maintained
- OEM-style corrugated mesh flex bellow
- Direct bolt-on fitment
- Enhanced exhaust note
- Reducers available for factory or upgraded cat-back systems
Features / Benefits
- 3-inch T304 Stainless Steel Tubing:
Quality Material that will not rust and will outlast your vehicle. - T316 Stainless Steel V-Band Flanges:
Durable, rustproof and cnc machined. - Direct Bolt-On Fitment:
Use all factory exhaust hanger and doesn’t require any modification or adjustment. - TIG Welded Construction:
Professionally hand welded to ensure longevity, resistance and leak proof. - Unique V-Band Fastening System Featuring Clampco® Clamps:
Maintain a perfect alignment every time while insuring a leakproof connection every time. Fully reusable and quick install. - Straight-Through, Free Flowing Muffler Design:
Optimal performance achieved by removing restriction and reducing back pressure. - Universal Fitment:
Come with OEM size reducer for a direct bolt-on. Optional 3” adapter available for most after market exhaust system or 3” slip fit adjustable link to match to any Unitronic exhaust system. - Sound Reflection Chamber Technology:
Sound reflection chamber used to cancel unwanted sound frequency and ensure a deep tone. - Sound Absorption Technology:
Perforated chamber packed with High quality and durable high temperature Fiberglass wool. Assure a deep tone and unwanted frequency absorption. - Polished 4-inch Slash Cut Exhaust Tips:
Chrome polished tips engraved with the Unitronic logo. - Optional Black PVD 4-inch Slash Cut Exhaust Tips:
Also engraved with the Unitronic logo, these optional tips are easy to swap using a slip on design.
Hardware Included
- Unitronic Performance Downpipe Featuring GESi 5” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converter
- 2x V-band clamps and centering rings
- 1x Stainless steel midpipe section
- 1x Stainless steel exhaust reducer
- Unitronic 3" Axle Section
- Unitronic 3" Mid-Pipe w/ Resonator
- Unitronic 3" Rear Section w/ Muffler
- Unitronic 4" Polished Chrome Slash Cut Tips
- Unitronic 3" V-Band Exhaust Clamps
- Unitronic 3" V-Band Sealing Rings
- Unitronic 3" V-Band Adapter
- All Necessary Hardware Included
Required Software
- Stage 2
Meets or Exceeds Local Testing Standards
While working closely with GESi through several iterations of their G-Sport Emissions Systems Catalytic Converters over the years, our goal once again was to ensure this product would satisfy our compliance demands, while fulfilling Unitronic's performance related goals. The team quickly opted for a GESi 5" UHOX converter for this Performance Downpipe, which met the requirements for the 2.0TSI EA888 EVO4 engine, while being rated for a massive 1000HP.
Unbeatable Design and Construction
In order to meet the power demands of the new 2.0TSI EA888 EVO4 engine, Unitronic designed and incorporated high quality CFD optimized castings in the upper downpipe section which are heat resistant and provide exceptional flow into the large 5" catalytic converter. Exhaust gasses continue through the OEM-style corrugated mesh flex bellow into the stainless steel midpipe section and reducer, all secured by v-band clamps and centering rings.
Maximum Performance with Unitronic Software
In order to take full advantage of this all-new Performance Downpipe, Unitronic Stage 2 ECU Software is now available for the MK8 GTI. With testing and validations completed, power outputs are increased by up to +151HP / +142LB-FT with Unitronic Stage 2 E85 Performance Software for a maximum of 417HP / 426LB-FT with even more to come. This software upgrade is entirely compatible with our UniCONNECT+ cable, empowering Clients to tune their vehicles directly through the OBD-2 port within minutes, from the comfort of their own home or garage.
Premium Components
Unitronic mufflers feature high density, high temperature glass fiber packing and ensure maximum performance and a sportier sound are achieved while maintaining a comfortable tone inside the cabin.
Sealing V-Band System
Unitronic Exhaust Systems feature a unique sealing v-band fastening system, using T316 stainless steel flanges and a locking ring to guarantee a centric alignment which ensures a leak proof connection every time.
Unbeatable Construction
Featuring 3-inch T304 Stainless Steel mandrel bent tubing, a quality material that won't rust and will outlast your vehicle, this MK8 GTI Cat-Back Exhaust system is backed by Unitronic's limited lifetime warranty.
Install
Unitronic MK8 GTI Cat-Back is made easy to install while bolting on factory hanger locations and using v-band fastening system along with slip on clamps.