BMW 140i 240i 340i 440i 540i Remap

Stock Figures:

340 – 360bhp / 280 – 305whp / 500nm

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Arguably one of the best engines ever produced by BMW… The B58 at time of writing there is three main variations of this engine but the one we see most is the first version. This is a very capable engine with great power capabilities in without need to swap internals. It is not uncommon to see 800bhp from a stock engine mated with hybrid turbo, uprated fuel pump & methanol. 


It is usual whilst tuning these to upgrade and gap the spark plugs to NGK 94201 as stock plugs can misfire under increased power from tuning. For those looking for more power than Stage 2 its very common to see stage 2+ which is stage 2 with an upgraded fuel pump and can see circa of 500 bhp.


Whilst tuning options like Cold Start, Speed Limiter, Burbles on Sport mode can be configured


Tuning methods available:

  • Stage 1

    Only ECU Flash Required

    430 – 450bhp / 365 – 385whp/ 600nm.


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    Stage 1 remap requires no physical changes to be made to the car this is software only and sees a huge gain in performance from standard power.


    Engine mapping inhouse or remote via BM3/ MHD.

    Gearbox XHP Software  (Not Required)

    ECU Unlock £90 (For 2017-2019) Included free with engine mapping.

  • Stage 2

    Stage2: Exhaust modifications required

    450 – 470bhp / 385 – 400whp 650nm.


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    Stage 2+: Exhaust  & Fuel pump Modification Required

    470 – 500bhp/ 400 – 425whp 700nm.


    Engine mapping inhouse or remote via BM3/ MHD.

    Gearbox XHP Software  (Not Required)

    ECU Unlock £90 (For 2017-2019) Included free with engine mapping.


    Stage 2 remap requires exhaust modifications, whether sports cat, decat & on newer models OPF/ PPF removal. At this power gearbox mapping is recommended also.

  • Stage 3

    Requires Uprated Turbos

    500 – 1000bhp / 410 – 850whp 900+nm


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    Engine mapping inhouse or remote via BM3 / MHD.

    Gearbox XHP Software (Required)

    ECU Unlock £90 (For 2017-2019) Included free with engine mapping.

    Additional Maps £400 (BM3 Required) 


    Stage 3 packages consist of upgraded HPFP (high pressure fuel pump) usually in the form of a Dorsch or a later B58tu pump and a hybrid turbo such as a pure 800 or pure 850. With the addition of methanol or ethanol we are seeing north of 700 bhp comfortably on these cars.

  • Gearbox Mapping

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    For B58 engines we opt for the world leading XHP gearbox software which compliments our custom engine mapping perfectly. Improved 0-60mph, better 1/4 mile, 2nd gear launching, raised torque limiters, massively improved shift times and optimised shift rpm all add together to make a package that transforms the daily drivability and power delivery of the legendary B58.

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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