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Unitronic FWD MQB Downpipe w/Cat (15-16 A3, 15-18 Golf/Golf Sportwagen)

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$879.99
879.99  
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SKU: MD-111819
MPN: UH041-EXA

Product Details

Description

Constructed of 3" T304 stainless steel mandrel bent tubing, T316 stainless steel flanges, a corrugated stainless steel flex section, and TIG welded fabrication, this downpipe is built to withstand the test of time, while performing to the max. All Unitronic downpipes come equipped with a 200-cell high flow metallic catalytic converter and all transitions are flow-matched to allow for maximum performance and airflow. 

In addition, Unitronic exhausts feature an easy-to-use v-band exhaust fastening system to ensure a fast and effortless installation and precise fitment. To finish it off, an OEM-inspired catalytic converter heat-shield protects against unwanted heat radiating in the exhaust tunnel. Every Unitronic Exhaust System comes equipped with a brushed matte finish for an elegant appearance that will last a lifetime. There's simply nothing like it!

Specs

  • 3" Inch Downpipe
  • Includes all V-band Clamps Needed
  • Reducer included for matching up stock Cat-back

Features/Benefits

  • 3-inch T304 Stainless Steel Mandrel Bent Tubing: 
    Quality Material that will not rust and will outlast your vehicle
  • T316 stainless steel v-band flange flanges: 
    Durable and rust proof
  • Direct bolt-on fitment with OEM mounting locations: 
    Use all Factory mounting location on the engine and on front subframe.
  • Locked V-band Rotation: 
    Securing downpipe to the engine assure no possible v-band flange rotation during hard acceleration
  • Factory catalyst position: 
    Assure maximum efficiency of the catalytic converter in line with OEM catalytic converter warm up strategy.
  • 200-cell metallic matrix high-flow catalyst: 
    Highly durable Matrix allowing minimal power loss while assuring maximum efficiency
  • OEM-inspired catalytic converter heat shield: 
    Help to reduce radiant heat in the engine bay.
  • 80mm to 76.2mm turbo to downpipe transition: 
    Assure a smooth flow transition between Turbine housing and 3” Stainless steel piping.
  • OEM Oxygen sensor placement: 
    No need for O2 sensor extension or modification of the wiring harness
  • 8-inch Corrugated stainless steel flex section: 
    High quality flex that will stay leak proof for years. It allows engine movement without stressing the factory rubber mounts
  • TIG welded construction: 
    Professionally hand welded to assure longevity and leak proof.
  • Unique v-band fastening system featuring Clampco® clamps: 
    Maintain a perfect alignment every time while insuring a leak proof connection

Hardware Included

  • Unitronic 3" Catatlytic Converter Section
  • Unitronic 3" Flex Section
  • Unitronic 3" Midpipe Section
  • 3 in TO 60 mm Reducer
  • Unitronic 3" V-Band Exhaust Clamps
  • Unitronic 3" V-Band Sealing Rings
  • All Necessary Hardware Included

Recommended Software

  • Stage 2
  • Stage 2+

Emissions Disclaimer

  • This product is sold for off-road use only.
  • By purchasing this product, you understand this product is sold for competition use and is not legal for use in highway or street vehicles.
  • The appropriate downpipe software is needed for this part or it will throw a CEL

 

Product Features

  • 3-inch T304 Stainless Steel Mandrel Bent Tubing
  • T316 stainless steel v-band flange flanges
  • Direct bolt-on fitment with OEM mounting locations
  • Locked V-band Rotation
  • Factory catalyst position
  • 200-cell metallic matrix high-flow catalyst
  • OEM-inspired catalytic converter heat shield
  • 80mm to 76.2mm turbo to downpipe transition
  • OEM Oxygen sensor placement
  • 8-inch Corrugated stainless steel flex section
  • TIG welded construction
  • Unique v-band fastening system featuring Clampco® clamps

installation

Downloads

 

Recommended Tools Needed

  • Oxygen Sensor Wrench
  • 6mm Allen key
  • 13mm socket
  • 3/8” Ratchet
  • 12” extension
  • Torque wrench
  • Pry bar (if necessary)

warranty

Lifetime Warranty on Hardware & 15-day Satisfaction Guarantee on Performance Software

Unitronic Warranty Information

Fitment Guide

Does this fit my vehicle?

Fitment Guide
Start Year End Year Make Model Submodel Cyl Lit Fuel FuelDel ASP EngDesg Notes
2015 2016 AUDI A3 CABRIOLET PREMIUM
CABRIOLET PREMIUM PLUS
CABRIOLET PRESTIGE
PREMIUM
PREMIUM PLUS
PRESTIGE
L4 1.8 GAS FI T ALL  
2015 2018 VOLKSWAGEN GOLF LAUNCH EDITION
S
SE
SEL
TSI
WOLFSBURG EDITION
L4 1.8 GAS FI ALL ALL  
2015 2018 VOLKSWAGEN GOLF SPORTWAGEN S
SE
SEL
L4 1.8 GAS FI T ALL Does not fit AWD (4Motion) vehicles. 

Customer Pictures

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Customer Reviews

4 / 5 Avg. Rating
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  • Review shared from Unitronic AWD MQB Downpipe - w/Cat (15-20 A3 Quattro, S3, 15-19 Golf R)

    great sounding downpipe that looks awesome. def a high quality system

    Bryan
  • Review shared from Unitronic AWD MQB Downpipe - w/Cat (15-20 A3 Quattro, S3, 15-19 Golf R)

    Not as direct bolt-on as advertised for the 2017 TT...

    Needed to cut 2.5 inches off of both the supplied reducer and muffler pipe to get this to fit correctly. Other than that it looks great...not sure how I like the sound yet...

    Ezra
  • Review shared from Unitronic Gen 3 3" Downpipe - w/Cat (1.8/2.0 TSI FWD)

    I ordered this Downpipe in a hurry as I had already order my Unitronic Stage 2 tune, and had bought a used downpipe that ended up having a leak. I installed this downpipe in my driveway with hand tools in about 3 hours, by myself. It's a straight forward installation, and the quality of Unitronic's downpipe is excellent! I love my Jetta GLI being at Stage 2 power/torque and this downpipe sounds great at cold start and in upper RPM's; though it tough to hear over the turbo spooling!

    Unitronic threw two extra 3" sealing rings into my box as well, which was nice as they are just thin aluminum. This pipe fit perfectly and did not require any custom modification to install.

    Matthew Candeloro
  • Review shared from Unitronic 3" Downpipe & Test Pipe - w/Cat (09-16 A4, 10-17 A5)

    Enthusiast of style and speed

    Let's start with the sound..... Just incredible. Deep and refined.
    Having seen many exhaust options from the aftermarket, I truly believe that the fit and finish of the Unitronic high-flow cat and downpipe are of the highest quality. Being an aircraft mechanic I can appreciate the addition of v-band style connections that are a proven solution for joining piping being both leak free and secure.
    Now I'm ready for APR Stage II

    Lake Coleman
  • Review shared from Unitronic 3" Downpipe - w/Cat (2.0L TSI FWD)

    Vw gti

    Put this on my 2009 gti tsi. I could tell the difference from stock. It's a nice down pipe and was easy to install. Took around 3-4 hrs on installation. Running it with stock muffler. Worth the money.

    Robert
  • Review shared from Unitronic 3" Downpipe - w/Cat (2.0L TSI FWD)

    12 VW GLI Gen1 2.0T

    Great product from Unitronic, Hardest part was getting the top bolt closest to the block on the factory downpipe. Loosened it from the top side using a 16mm box end wrench and then used a 16mm socket with an extension fend in from the driver side near the master cylinder to finish taking the nut off. I would also recommend picking up a factory turbo gasket, i picked one up at the local parts store for $10 bucks. Unitronic downpipe was easy to install once the factory stuff was out of the way. Have the stage 2 tune so no CEL issues and noticed a big increase in power and smoothness from the stage 1+.

    Phil S
  • Review shared from Unitronic 3" Downpipe - FWD w/Cat (15-21 GTI, 19+ GLI)

    The downpipe arrived and the quality is awesome. Zero fitment issues, OEM cat placement, and v-band clamps make the installation super easy.

    James
  • Review shared from Unitronic 3" Downpipe w/Cat (16-18 Jetta 1.4T)

    2017 Jetta 1.4T

    Great downpipe! I also have a cold air intake installed. After installing the downpipe the intake is now louder. The downpipe did not make much noise difference itself with the stock exhaust but there is a slight difference. However, there is a great difference in power and torque. It does pull a CEL without the stage 2 tune for the O2 sensors but the tune clears that. I would definitely recommend this product.

    Danielle Jacobs
  • Review shared from Unitronic 3" Downpipe w/Cat (16-18 Jetta 1.4T)

    Great add on!

    I just installed this on my 2016 last weekend. Install was a pain. I wouldn’t do it again but the finished result is amazing. I had the 1+ tune before and the stage 2 with this pipe is quite a bit quicker. The sound is a lot meaner. Can’t wait to surprise some people at green lights!

    Steven
  • Review shared from Unitronic 3" Downpipe - w/Cat (2.0L TSI FWD)

    3” Uni Downpipe

    Bought this downpipe/mid pipe kit and love it. Coupled with the Uni intake and stage 2 tune my car feels twice as fast. Cannot believe the torque gains from the tune. But the exhaust I love because it’s not too loud. I’m not one for loud exhausts and I feel this pipe fits right in the middle. Super easy to install

    Jeff Pennella
  • Review shared from Unitronic 3" Downpipe - FWD w/Cat (15-21 GTI, 19+ GLI)

    Great gains, great engine response

    Installation was a cinch. Getting the stock downpipe off, however, was not. There was zero room to work with! It helps to have a spotter on top while you work underneath the car. Performance gains are very nice over stage 1. It now pulls all the way to redline, and turbo lag is much less apparent. Also, looks good, but unassuming, with a nice brushed stainless finish. Since there's no Unitronic logo all over the top half, it looks almost stock from the engine bay. Welds are nice. The Unitronic stamp on the subframe mount is a nice touch. The excellent v band system means no exhaust leaks. This is worth the price for the excellent fitment.

    Chadwich Brown
  • Review shared from Unitronic 3" Downpipe - FWD w/Cat (15-21 GTI, 19+ GLI)

    Easy install, amazing gains

    Getting the factory downpipe off wasn't easy, but getting this one installed was a piece of cake. The gains were substantial and immediately noticeable. On my 2019 Jetta GLI, the sound isn't much louder than stock, to be honest. I was expecting louder, but I still have the stock catback. Make sure you have a spotter to assist in removing the factory downpipe.

    Chad
  • Review shared from Unitronic 3" Downpipe - w/Cat (2.0L TSI FWD)

    Unitronic 3” Downpipe

    I couldn’t be happier with the quality and most importantly the fit of the Unitronic Downpipe. The install was about 4 hours from start to finish. I also went from Stage 1+ Unitronic ECU tune to Stage 2 after the Downpipe was installed. The increased performance is the largest difference I’ve seen or felt out of all the modifications I’ve done so for to my 2013 Mk6 GTI. It really is like driving a different car. This Downpipe is without a doubt of the highest quality and, as I previously stated, the fit is “OEM good”. Thank you Unitronic and Moddedeuros!

    Andrew Bové
  • Review shared from Unitronic 3" Downpipe - w/Cat (2.0L TSI FWD)

    Took a while but i got it done

    I purchased the Unitronic Downpipe for my 2013 Volkswagen CC Sport , it took me around 4 hours to install. not that it was hard just my first time doing something of this nature. everything went smooth until i had to connect the down pipe to my stock catback exhaust the adapter it comes with to allow you to do that was to long so i had to cut my exhaust about a inch and a half for it to fit and allow me to use the stcock clamps it came with .

    Jesus Gomez
  • Review shared from Unitronic Gen 3 3" Downpipe - w/Cat (1.8/2.0 TSI FWD)

    Very impressed

    Just want to say I am very impressed with this downpipe. It took the shop hour or hour and half to put on. Had enough clearance, and the shop guy said it went very smooth. Also no check engine light so fair, so that made me happy.

    Brandon Talford
  • Review shared from Unitronic Gen 3 3" Downpipe - w/Cat (1.8/2.0 TSI FWD)

    Still great product

    After a few hours of driving and no check engine light, I guess the computer felt something different and has thrown the light 😂😂😂

    Brandon Talford
  • Review shared from Unitronic AWD MQB Downpipe - w/Cat (15-20 A3 Quattro, S3, 15-19 Golf R)

    Car Enthusiast

    At first It was a little loud, Atleast to my exceptions considering it was Catted, but after tying my car to the stage 2 Unitronic burble tune I fell in love instantly. The car sounds great, burbles likes crazy (which I guess depends on ur preference) but I have zero complaints. Even if you want to run the stage 2 file without burbles you will have very moderate burbles but it’s not to complain about. Would definitely buy again and very happy with the way my A3 sounds. Don’t fall for the catless gimmicks because this sounds just as good but doesn’t case a gas smelly cabin and you can run through state inspection just fine.

    Michael Gorny