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BMW Tuning
BMW M4 Remap Figures
Before and after power and torque for every BMW M4 engine we tune, measured on our in-house 4WD dyno. Every map is written for your exact car and is fully reversible.
BMW M4 M4 power & torque delivery
Power & torque deliveryindicative shape · scaled to your peak figures · RPM
Stock bhpStock NmStage 1 bhpStage 1 NmStage 2 bhpStage 2 Nm
Shape is indicative. Your real before & after curves are measured on our 4WD dyno on the day and you take the printout home.
Power & torque deliveryindicative shape · scaled to your peak figures · RPM
Stock bhpStock NmStage 1 bhpStage 1 NmStage 2 bhpStage 2 Nm
Shape is indicative. Your real before & after curves are measured on our 4WD dyno on the day and you take the printout home.
F82/F83 (2014 onwards)
Stage 2 Petrol supporting mods: decat or sports cat + uprated intercooler.
Every price on this page is a full custom dyno tune
Not a generic file bought in and flashed over the port. Your BMW M4 is strapped to our in-house 4WD dyno and the map is written for your car, on the day, from its own data.
- Health check firstWe look the car over and read the fault memory before we touch anything. If something is wrong, you get told. We don't map over a problem.
- Live data loggingBoost, ignition timing, fuelling, knock and temperatures all watched in real time while the car is running under load.
- Custom calibration on the dynoThe map is built and adjusted run by run against what your engine is actually doing, not what a file supplier assumed.
- Before and after printoutYou leave with the graph: your standard figures and your tuned figures, measured on the same rollers, the same day.
Spread the cost. From
£99.84/mo over 6 months at
0% APR, interest free. Or 3 interest-free payments of
£199.67 with Klarna.
How finance works ›Book engine
and gearbox tuning together and
save £125.
BMW M4 remapping questions
How much bhp does a BMW M4 gain from a remap?
It depends which engine you have. Across the 4 BMW M4 engines we tune, the M4 sees the biggest Stage 1 gain: 431bhp to 500bhp and 550Nm to 680Nm, up 69bhp. Every figure on this page is for that exact engine.
How much does it cost to remap a BMW M4?
Stage 1 custom dyno tuning on a BMW M4 starts at £599 inc VAT, and gearbox tuning is £385. Book both together and you save £125. You can spread it over 6 months at 0%, or pay in 3 interest-free instalments with Klarna.
Does my BMW M4 need its ECU unlocking?
If it was built from around June 2020 onwards, yes. Those ECUs are locked from the factory and have to be unlocked before anything can be written. We do it in-house. Check your registration and we will tell you straight away whether yours is affected.
Check if your ECU is locked ›What does Stage 2 need on a BMW M4?
A decat or sports cat downpipe and an uprated intercooler. Stage 2 is not something we can map safely on a standard car, so without the hardware we would fit Stage 1 and you can step up once it is fitted.
Will remapping my BMW M4 affect my warranty or insurance?
A remap is an aftermarket modification, so it is your responsibility to declare it to your insurer. It may also affect any remaining manufacturer warranty. Our maps are fully reversible and we keep your original file, so the car can be returned to stock whenever you need.
How long does it take, and is it reversible?
Most Stage 1 tunes take around two hours, and cars needing ECU unlocking are booked as a 4-hour half-day. It is completely reversible, and your factory file is saved before we touch anything.
Ways to pay
3 interest-free payments0% finance over 6 monthsCard & Apple Pay£50 deposit secures your slotHow finance works › Other BMW models
Whichever you pick, the total carries through to checkout, so pay in full by card, Apple Pay or Klarna (3 interest-free payments), or secure the slot with a £50 deposit. Figures are typical results for a healthy, standard vehicle on our dyno. Your car’s actual output depends on its condition, fuel quality and any supporting modifications. Prices shown are for Stage 1 custom dyno tuning inc VAT; locked ECUs (most BMW and Audi registered from mid-2020) carry an additional unlocking charge, confirmed when you book.
