AWD/RWD LTG Downpipe


152 reviews

This product is currently out of stock.

AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe

This is ZZP’s first exhaust part that we released for the Cadillac ATS and CTS 2.0 turbo.  This is the same part that is installed on Matt’s car which is the worlds fastest stock turbo ATS - we run what we sell. It is fully 304 stainless steel, so it will outlast the car and don’t forget the amazing TIG welding that ZZP is known for. Typical gains are from 10-20whp and quicker turbo spool. No tuning required, although it is recommended, and it bolts in place of the stock piece.  The stock downpipe is 13.5 lbs, while ZZP's catted pipe is 7.2 lbs.

We use a premium 400 cell cat which should not set off any check engine lights, however when changing any catalytic converter in new cars you run the risk of a P0420 code. 

We are currently offering $100 in store credit to purchase your stock catalytic converter back from you. If you're interested, take a photo of your stock downpipe and email it to We will provide prepaid shipping labels for domestic (U.S.) shipments. 

Revised 02/2020 with change of rear O2 placement to avoid any transmission line interference.  

Fits the following 2.0L LTG vehicles: AWD/RWD: ATS & CTS, & Camaro.
Does NOT fit Regal or Malibu, however we do offer the FWD version here: FWD LTG Downpipe/ O2 Housing

CLICK HERE for Digital Install Instructions

AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Customer Reviews
4.9 Based on 152 Reviews
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Don M.
United States United States

I love the direct replacement part. No issues

ZZPerformance AWD/RWD LTG Downpipe ReviewZZPerformance AWD/RWD LTG Downpipe Review
United States United States
Better Than Expected (2013 ATS 2.0T BASE AUTO)

I've been weld/fab for over 12 years and the quality of this piece is stellar. If I made it myself I would be just as happy with it. In conjunction with the Mishimoto intake tube (ZZP was out of stock and I needed it!) there is the perfect amount of turbo whistle. The exhaust note is a little more present and not by any means too loud, it's perfect. I recommend having a semi deep socket, 3"extension, and a long handled 3/8" indexing ratchet for the bolts on the downpipe. That made it a thousand times easier to break loose and tighten. I get the P0420 code because I didn't use the o2 sensor spacer (the end of the sensor was pressing against the body, had the **** been welded 10 degrees toward the transmission I would not have had that issue) but that doesn't matter because I'm going to tune the car next and I know that the code is just telling me there's too much flow after the cat. Overall, fantastic quality. For the price, amazing quality. ~2.5-3 hours taking my time. Highly recommend to everyone that's interested. 4.75 Stars.

Jeremiah G.
United States United States
ATS Downpipe

Install was simple, came with instructions if you need it. Quality of the downpipe is amazing. Came with all the hardware needed. No CEL came on after installing.

ZZPerformance AWD/RWD LTG Downpipe Review
Michael E.
United States United States

Easy install my 13yr old did 90% of install took him 4hrs from start to finish. Love the sound. I feel a bit more power and much smoother through the gears and downshifting compared to stock. ZZP great products

ZZPerformance AWD/RWD LTG Downpipe Review
Ali H.
Canada Canada
LTG downpipe ATS 2.0

This was my second purchase for my ATS. Combined with the silicone intake tube and k&n drop in filter, I see a big difference with the sound and how fast the turbo spoofs. No CEL however I already have a tune on my car. Def recommend it