Milltek HJS Tuning ECE Downpipes for BMW 1 Series 114i, 118i & 120i (F20 & F21 - N13 Engine Only) (2012-2015) – Improved Flow, Sports Catalyst
This is Milltek's HJS Tuning ECE downpipe set for the BMW 1 Series 114i, 118i & 120i (F20 & F21 - N13 Engine Only). These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.
They're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.
Because they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.
Specifications
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System Type: HJS Tuning ECE Downpipes
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Pipe Diameter: 70mm (2.76")
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EC Approved: Yes
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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
- 70mm (2.76") pipework
- High-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases
- EC approved
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- BMW 1 Series 114i, 118i & 120i (F20 & F21 - N13 Engine Only) (2012-2015)
- BMW 1 Series 116i (F20 and F21 - N13 Engine Only) (2012-2015)
Not suitable for: the BMW 1 Series M140i 3 & 5 Door (F20 & F21 LCI, Non-OPF), which needs the Milltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr & 5dr F20 & F21 LCI, Non-OPF 15-18.
Installation
Before ordering, note: For Fitment to OE & Milltek Sport Cat Back Systems. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.
Will it fit the BMW 1 Series 116i (F20 and F21 - N13 Engine Only)?
Yes. Milltek lists this part for the BMW 1 Series 116i (F20 and F21 - N13 Engine Only) as well as the other models in the fitment list above.
Does it fit the BMW 1 Series M140i 3 & 5 Door (F20 & F21 LCI, Non-OPF)?
No. For that car, choose the Milltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr & 5dr F20 & F21 LCI, Non-OPF 15-18.
Is it road legal?
Every version of this part is listed by Milltek as EC approved.
Do I need a remap?
A suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.
Can I use it with my standard exhaust?
It depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.
How is a sports cat different from a de-cat?
A sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.
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.
