Milltek Cat-back Exhaust for Audi A1 1.4 TFSI S line 150PS ACT (2015-2018) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Audi A1 1.4 TFSI S line 150PS ACT. It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in 2 tailpipe finishes, so you can pick the setup that suits how the car's used.
It's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.
Specifications
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System Type: Cat-back
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Pipe Diameter: 70mm (2.76")
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Tip Style: Twin 80mm GT80
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EC Approved: No
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Race System: No
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Fitting Time: approx. 1 to 1.5 hours (Milltek figure)
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- 70mm (2.76") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 2 tailpipe finishes: GT-80 Cerakote Black, GT-80 Polished
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi A1 1.4 TFSI S line 150PS ACT (2015-2018)
- Audi A1 1.4 TFSI S line 185PS S tronic (2010-2015)
- Volkswagen Polo GTi 1.4 TSI 180PS 7spd DSG (2010-2015)
Not suitable for: any model, engine or body style not listed above. Check your car before ordering.
Installation
Milltek quotes a fitting time of approx. 1 to 1.5 hours. Please note: O.E system requires cutting for removal. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
Upgrade Further
Also available from Milltek for this car: Milltek Downpipe & De-cat Audi A1 1.4 TFSI S line 185PS S tronic 10-15.
Which tailpipe finishes are available?
You can choose from: GT-80 Cerakote Black, GT-80 Polished. The finish is cosmetic and does not change the sound.
Will it fit the Audi A1 1.4 TFSI S line 185PS S tronic?
Yes. Milltek lists this part for the Audi A1 1.4 TFSI S line 185PS S tronic as well as the other models in the fitment list above.
Is it road legal?
Milltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.
Do I need a remap?
No. It fits behind the factory catalytic converter, so no software changes are needed.
Does it keep the factory catalytic converter?
Yes. It fits behind the factory catalytic converter, which stays in place.
How long does it take to fit?
Milltek quotes approx. 1 to 1.5 hours. Note: O.E system requires cutting for removal.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
