Downpipe BMW 118d – 120d F40 B47 ECO-Race | DPF Removal Ø63,5 mm

The InoxPower ECO-Race Downpipe for BMW 1 Series F40 118d and 120d with B47 engine is the ideal solution for those who want to improve performance and sound on their diesel vehicle while focusing on maximum savings, without sacrificing reliability.

This ECO-Race version was created to offer a more affordable alternative to the larger EVO-Race line, while maintaining OEM functionality and compatibility. The design is specifically engineered to keep costs down and align with the most competitive prices on the market.

What is a downpipe (decat)?

The downpipe, also known as a decat pipe, is the connection that links the turbocharger to the exhaust system.
By replacing the original catalytic converter/DPF, which restricts exhaust gas flow, you achieve a freer flow, with immediate benefits in performance, throttle response, and sound.

The ECO-Race InoxPower version features:

• DPF removal

• Ø63,5 mm connection

• NON-upgraded diameter, for a balanced setup focused on cost savings

Real benefits even with a stock ECU

Even with a stock ECU, installing the ECO-Race downpipe allows:

• Improved exhaust gas evacuation

• Reduced backpressure

• Quicker throttle response

Without increasing turbo boost pressure or injector load, it is possible to achieve a natural power increase of up to 10–12%, with smoother and more responsive delivery.

With a remapped ECU, the ECO-Race downpipe becomes a key component to fully exploit the tune and improve the overall reliability of the exhaust system.

InoxPower Downpipe ECO-Race

By choosing the ECO-Race version, you get:

• ✔ Improved performance

• ✔ Faster engine response

• ✔ Reduced turbo-side temperatures

• ✔ Deeper, sportier sound

• ✔ More affordable price compared to larger versions

• ✔ Compatibility with OEM or aftermarket exhaust systems

The original catalytic converter/DPF also acts as a sound dampener: once removed, the sound becomes more aggressive and pronounced, even when keeping the rest of the exhaust system stock.

Advantages of InoxPower Downpipes (decat):

Installing an InoxPower downpipe allows you to gain numerous benefits beyond increased power and torque, such as improved throttle response, since exhaust gases flow much faster without being restricted by the catalytic converter.

This also helps to better cool the turbocharger, ensuring lower exhaust gas temperatures. Faster exhaust flow means less heat concentration near the turbo, further reducing backpressure.

Last but not least, a free-flowing downpipe guarantees an impressive sound, which becomes deeper and more aggressive compared to the original exhaust system.

The factory catalytic converter absorbs sound and also acts as a silencer. Installing an InoxPower downpipe ensures a clear improvement in your car’s sound, even with the stock exhaust.

In summary, by installing an InoxPower downpipe you will get:

- improved performance

- faster engine response

- racing sound

- reduced turbo temperatures

Easy to install, designed to fit the original OEM exhaust system (always verify compatibility before purchase. Please note: the vehicle version considered may differ in certain details and exhaust layouts) or an aftermarket exhaust. Product not approved for road use. We decline all responsibility for improper use on public roads.