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BMW M135i F20/F21 320hp (before 07/2013)

28 products for this car

Model(s):1 Series
Year:F20/F21 (2010-2015)
Tag(s):M135i
Motorcode:N55

BMW M135i F20/F21 TUNING. Tuning a car is a delicate thing. Whether it’s an ECU remap, a new turbo or a full-on stage three tuning, you...

Select your tuning stage View tuning parts

Mark Hendrikx - Automotive engineer at Mosselman

Expert's advice:

Developing the best possible ECU remap (chiptuning) for a car requires time and intimate knowledge of the vehicle you’re tuning. In order to provide high quality ECU remaps, our mappings are developed exclusively for BMW and MINI cars. Before we add an ECU remap to our line-up, we make sure it’s tested thoroughly on our dyno. Our software is engineered to create a smooth power delivery that keeps going till the redline, without putting your engine at risk. Besides that our Stage 2 and Stage 3 software are designed to get the most out of our Mosselman high-end performance parts.

IMPORTANT NOTE: Installation of the ECU remap and back to stock can be done by any official Mosselman Dealer, or for most cars at home with the iMoss DIY solution that we offer (contact us to confirm the iMoss availability for your model).

Mark Hendrikx - Automotive engineer at Mosselman

Mosselman's advantages:
BMW & Mini specialist
High-end performance parts
40 years' experience
Shipping in 24 hours
Made in Holland

Performance gains per stage

For your BMW M135i F20/F21 320hp (before 07/2013)

Series stock performance: 320hp | 410Nm | 236kW* * based on manufacturer supplied data

Chiptuning, BMW Fxx N55

With an ECU remap, also known as “chip tuning” or “reflash”, the original ECU of the car will be recalibrated on several different engine parameters for more performance. Options like speed limiter removal and start/stop deactivation are available. Please note that an ECU remap will void the factory warranty once detected by a BMW dealer. Installation and back to stock can be done by any official Mosselman Dealer, or at home with the iMoss DIY solution that we offer.

The ECU Remap will take your BMW M135i F20/F21 PWG to approximately 355 hp and 510 Nm on premium fuel (98 Oct EU / 93 Oct USA), which is highly recommended. Additional to the ECU remap we recommend installing our MSL Oil Thermostat N55 to lower the oil temperature.

Chiptuning, BMW Fxx N55

Mosselman Intercooler, BMW F-Series Nxx Bxx

Go for the next step in performance with our ECU remap and an upgraded Intercooler: a very cool and powerful combination. The intercooler will lower the intake temperature, allowing more timing and boost resulting in better performance in all conditions.

This package will take your BMW M135i F20/F21 N55 PWG to approximately 370 hp and 530 Nm on premium fuel (98 Oct EU/ 93 Oct USA), which is highly recommended. Additional to this package we recommend installing our MSL Oil Thermostat N55 to lower the oil temperature.

Chiptuning, BMW Fxx N55

Mosselman Intercooler, BMW F-Series Nxx Bxx

Evolution Racewerks Catless Downpipe, BMW Fxx N55 <2013

Select the desired product

Evolution Racewerks Catless Downpipe, BMW Fxx N55 <2013

€ 595.00
Evolution Racewerks Catted Downpipe, BMW Fxx N55 <2013

€ 1,019.00

The Stage 3 package includes our ECU remap, an upgraded intercooler, and sport/catless downpipes. The downpipe can be ordered with or without Sport Catalytic* and will reduce the backpressure, resulting in better performance and a racing sound. *Please note that the catless downpipe can cause problems due to the road regulations in your country.

This package will take your BMW M135i F20/F21 N55 PWG to approximately 375 hp and 530 Nm on premium fuel (98 Oct EU/ 93 Oct USA), which is highly recommended. Additional to this package we recommend installing our MSL Oil Thermostat N55 to lower the oil temperature.

Chiptuning, BMW Fxx N55

Mosselman Intercooler, BMW F-Series Nxx Bxx

Evolution Racewerks Catless Downpipe, BMW Fxx N55 <2013

Select the desired product

Evolution Racewerks Catless Downpipe, BMW Fxx N55 <2013

€ 595.00
Evolution Racewerks Catted Downpipe, BMW Fxx N55 <2013

€ 1,019.00

Mosselman BMW N55 PWG Upgrade Turbocharger, MSL48-60

Go full power with our Stage 4 package! The Mosselman MSL N55 PWG Turbocharger Upgrade is based on a brand new OEM turbo and will unleash the full potential of the N55 engine. It's highly recommended to add an upgraded fuel pump to this turbo upgrade: Dorch N55 High Pressure Fuel Pump.

Together with our Stage 3 ECU remap, Upgraded Intercooler, Catless Downpipe, and Dorch Fuel Pump, this Stage 4 Package will take your BMW M135i F20/F21 PWG to approximately 450 hp and 650 Nm on premium fuel (98 Oct EU/ 93 Oct USA), which is highly recommended.

Additional to the Stage 4 package we recommend installing our MSL Oil Thermostat N55 to lower the oil temperature.

Excluding sales Tax

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BMW M135i F20/F21 TUNING.

Tuning a car is a delicate thing. Whether it’s an ECU remap, a new turbo or a full-on stage three tuning, you need to make sure each component is working at optimal efficiency under careful supervision of a sufficiently smart engine management system. After all, you’re looking to create a symphony and that’s hard to do when one of the instruments is off. That’s why all of our products are designed and built in-house. Professional tuning requires a steady hand and we want to be solely responsible for getting the most out of your car.

Because most modern engines are heavily restricted due to emission regulations, an ECU remap is always the first step towards unlocking the performance your BMW M135i is capable of. However, as our name implies, we do have upgraded turbos, should you be in the market for one. In addition, Mosselman Turbo Systems offers more efficient intake and exhaust systems, oil thermostats, oil coolers, and intercoolers. So if you’re looking for more performance, you’ve come to the right place.

MOSSELMAN tuning experiences

My first impressions after the remap: the acceleration is much more dynamic, it feels like the car now has the powertrain that fits it well! I’m very satisfied with your service, explanations, and friendly approach. Thank you!

Dennis - BMW X5 40e
Mosselman tuned my BMW 318d today. What a result, it became a completely different car! Very professional company and friendly staff. This was my second car here and again they have exceeded my expectations. Thanks!

Thom H.
Very happy with my improved car, the car reacts better on the throttle and is very direct. Also, the exhaust sounds better!

Rob M.
With Mosselmans' performance package I exceeded even more than the company advertised on their website! The information-sharing process was easy and hassle-free. Excellent customer service from Leon and his team!

Anders M.
After 1,5 years still very happy with my iTronic. By far the best upgrade I could have done with my BMW 340i.

Romke B.

Do you have a question?

Please take a look at our FAQ for the most commonly-asked questions, or feel free to contact us.

When we talk about chiptuning a car (remap), we mean that we adjust the software of your BMW or Mini. This allows us to change the parameters of the engine management system, for an example the fuel injection system, ignition and turbo pressure. We always stay within the limits of the engine, which allows you to enjoy maximum performance under safe engine conditions.

Mosselman Turbo Systems has been the expert in BMW and Mini tuning for over 40 years. Due to our experience and expertise we know exactly how far we can go when we chiptune a car. Over the years we’ve constantly developed and thoroughly tested of our software mappings. We believe it’s very important that our software and performance products don’t have negative impact on the reliability of a car. That’s why made sure every upgrade we perform is completely safe and does not harm the car or it’s engine, if driven under normal conditions.

The fuel consumption after chip tuning will be a bit lower, if driven under normal circumstances. However, if you have more power and torque you will probably use it and this will increase the fuel consumption. You can save fuel with our chip tuning, but it all comes down to how good you are in controlling your right foot.

No, we don’t offer warranty on the engine after buying our chip tuning. We don’t do this because we don’t know how what happened with the car and engine before the chip tuning. Before we start with the tuning we will always read the ECU for fault codes and check the engine visually for possible problems. Due to our experience and expertise we know exactly how far we can go when we chiptune a car. We always stay within the limits of the engine, which allows you to enjoy maximum performance under safe engine conditions.

Chip tuning your car will take approximate 3-4 hours, including optional dyno runs. We have a waiting area with some magazines and coffee to make the waiting comfortable.