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BMW M135i (F20/21) & M235i (F22) Tuning

The N55 powered M135i & M235i respond incredibly well to tuning, the added features of Ecutek completely transform the way these cars respond with switchable map modes, controllable boost settings, adjustable launch control and much much more.

We've been an Ecutek Master Tuner (the only one in Wales) for many years and drew on our extensive experience to take full advantage of the capabilities extended to us by using the Ecutek software for the development of our S55 calibration. With access to extensive datalogging, map definitions and the ever evolving Ecutek RaceRom features, we're entirely satisfied that our F-Series ECU calibration is unmatched.

The introduction of the OPF (otto particulate filter) by BMW in 2018 posed a new challenge, the filter introduced a substantial exhaust gas flow rate restriction but after extensive development on a brand new M4, we're delighted to announce that the OPF is not a concern, our ECU calibration for OPF vehicles prevents excessive back pressure.

We have developed Stage 1 and Stage 2 ECU Calibrations with complete Performance Packages that include the necessary hardware available.


Stage 1 - 390bhp

This package is designed for a stock car with no hardware modifications required and consists of our ECU Calibration using Ecutek, data logging and dyno power runs.

Price £699 inc VAT


Stage 2 - 420bhp

This package is designed for a car running bolt on modifications such as an uprated air intake, decat downpipe and uprated intercooler, it includes our ECU Calibration using Ecutek, data logging and dyno power runs.

Price £699 inc VAT


Ecutek Bluetooth Connect

This is the perfect accompaniment to your Ecutek ECU Calibration.

Price £240 inc VAT






Stage 2 Package

We've put together a Stage 2 Packages based on our Stage 2 ECU Calibration using Ecutek, a Forge Motorsport Intercooler, aFE Power Pro 5R Cold Air Intake, Cobra Downpipe, labour and dyno time.

Price £2499 inc VAT (With Decat Downpipe)

Price £2799 inc VAT (With Sports Cat Downpipe)



Improving engine performance is one thing but being able to stop is much more important, we have some fantastic stopping power upgrades from well known manufacturers such as Alcon and Stoptech, you'll find these products on our site and we offer full fitting services at our workshop.




We offer suspension upgrades from a wide range of manufacturers including Bilstein, Eibach and Nitron, we're also the only KW Performance Partner in South Wales and the West, we don't just sell high end suspension, we offer installation, geo setup and corner weighting to ensure you're getting the very best out of your upgrades.




We offer a wide range of exhausts upgrades from well known manufacturers such as Akrapovic, Milltek Sport, Cobra and Scorpion, we offer free fitting on Milltek Catback Exhausts that are purchased at full RRP, contact us for more information.


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