Milltek Cat-back Exhaust for BMW 3 Series F30 328i M Sport Automatic (without Tow Bar, Non-xDrive & N20 Engine Only) (2012-2015) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the BMW 3 Series F30 328i M Sport Automatic (without Tow Bar, Non-xDrive & N20 Engine Only). 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 resonated EC approved or non-resonated versions, 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: 76.2mm (3")
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Tip Style: Twin 90mm GT90
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Race System: No
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
- 76.2mm (3") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- BMW 3 Series F30 328i M Sport Automatic (without Tow Bar, Non-xDrive & N20 Engine Only) (2012-2015)
Not suitable for: the BMW 3 Series F30 320i M Sport Saloon (LCI models, Non-xDrive, Non-OPF & B48 Engine), which needs the Milltek Cat-back Exhaust BMW 3 Series F30 320i M Sport Saloon (LCI models, Non-xDrive, Non-OPF & B48 Engine) 15-19; the BMW 3 Series F30 320i L M Sport Saloon (Long wheelbase) (LCI models, Non-xDrive, Non-OPF & B48 Engine), which needs the Milltek Cat-back Exhaust BMW 3 Series F30 320i L M Sport Saloon Long wheelbase (LCI models, Non-xDrive, Non-OPF & B48 Engine) 15-19; the BMW 3 Series F80 M3, M3 Competition & M3 CS Saloon (OPF/GPF Models Only), which needs the Milltek Cat-back Exhaust BMW 3 Series F80 M3, M3 Comp M3 CS Saloon OPF/GPF 19-20.
Installation
Some versions: Requires 335i rear valance. EC-Approved. Some versions: Requires 335i rear valance. Non-resonated (louder). 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 BMW 3 Series F30 328i M Sport Automatic (without Tow Bar, Non-xDrive & N20 Engine Only) 12-15.
What's the difference between the resonated and non-resonated versions?
The resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.
Does it fit the BMW 3 Series F30 320i M Sport Saloon (LCI models, Non-xDrive, Non-OPF & B48 Engine)?
No. For that car, choose the Milltek Cat-back Exhaust BMW 3 Series F30 320i M Sport Saloon (LCI models, Non-xDrive, Non-OPF & B48 Engine) 15-19.
Is it road legal?
Some versions are EC approved; check the EC Approved line in the specification for the option you choose.
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.
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.
