2019+ BMW 135i 235i Xdrive - F40 F42

Stock Figures:

306 BHP


Click Buy Now to see Pricing


Any BMW produced after June 2020 required the additional step of unlocking the ECU. We offer this service when tuning and requires the vehicle or ECU to be with us for around 4 days.


Tuning methods available:


  • ECU Unlock

    BMW cars manufactured after June 2020 require an unlock process that takes a few days. Currently worldwide there is no alternative to unlocking the ecu in this manner, this is a required step to gain write access to the ecu . Due to this extra step we ask the vehicle is left with us for 1 week. 


    Over time this has become a very regular process for us and one we are confident in providing.


    During this unlock process its possible to enable bootmod3 custom rom, mhd custom rom or if keeping costs down we can flash direct to ecu with no additional licenses requried although we do love the extra features bm3 and mhd provide.

  • Stage 1

    Only ECU Flash Required

    355-360bhp 500nm



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    We have carried out development on this ecu and engine resulting in the b48 producing a fast safe and reliable increase in power. We are able to unlock engine ecu and also carry out gearbox mapping to create a complete package.

    Watch our Stage 1 Video
  • Stage 2

    Exhaust modifications required

    360 - 370 BHP 520 NM


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    For offroad use this is aimed at those interested in track use. More power and more noise with this level of tuning

    Watch our Stage 2 Video
  • Gearbox Mapping

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    A common complaint with the 8hp gearbox is the delayed slow shifts. All this potential for power but its important the gearbox can allow that power to be transferred to the wheels quickly and effectively. Using XHP with our custom settings works perfectly for Stage 1 and Stage 2 cars and those with higher power or racing we are able to provide fully customised gearbox mapping allowing the gearbox to handle high torque levels and maintaining crisp shifts.

Step by step how to get your remap:

Buy your remap online

Buy online selecting the tuning stage and methods you require.

Our team will be in touch

Within 24 working hours our team will be in touch via email to arrange your remap.

The remap

We'll carry out your chosen remap either remotely or in-house based on your selection.

Our guarantee

All of our remaps come with a guarantee, so your 100% satisfaction is a given for each project.

1. Buy your remap now online:

Watch our video about tuning these vehicles

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