Typical before and after power and torque for every Alpina D4 engine we tune. Your own car is custom mapped on our in-house 4WD dyno, and every map is fully reversible.
Locked ECU? No problem. BMW and Alpina cars built from June 2020 have an encrypted ECU. We unlock it on our own bench the same day — £100 added to a tuning booking — and it adds no time to your appointment. On its own, if we’re not tuning the car, it’s £249. Check your reg → · More on unlocking →
Every price on this page is a full custom dyno tune
Not a generic file bought in and flashed over the port. Your Alpina D4 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, rail pressure, injection timing, fuelling and exhaust 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 £74.83/mo over 6 months at 0% APR with Bumper, interest free. Or choose Pay in full when you book and pay with Klarna. How finance works › Book engine and gearbox tuning together and save £125.
Alpina D4 remapping questions
How much bhp does an Alpina D4 gain from a remap?
Gains vary by engine. The strongest on the Alpina D4 is the D4 Bi-Turbo, which goes from 350bhp and 700Nm to 390bhp and 750Nm, a gain of 40bhp. Find your engine in the table above for its own numbers.
What does an Alpina D4 remap cost?
Prices start at £449 inc VAT for Stage 1 on an Alpina D4. Each engine in the table shows its own price, and adding gearbox tuning at the same time saves £125. Bumper 0% finance over 6 months and Klarna are both available.
Does a remap invalidate the warranty or insurance on an Alpina D4?
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: the car can be put back to its factory software whenever you need.
How long will my Alpina D4 be with you, and can it be undone?
Most Stage 1 tunes take around two hours. If the ECU needs unlocking we do that here on our own bench during the same visit, so it does not make the appointment any longer. It is completely reversible: the car can go back to its factory software whenever you need.
Ways to paywhen you pay in full0% finance over 6 monthsCard & Apple Pay£50 deposit secures your slotHow finance works ›
Whichever you pick, the total carries through to checkout, so pay in full by card, Apple Pay or Klarna, or secure the slot with a £50 deposit. Figures are typical for a healthy, standard vehicle; your before and after dyno printout shows exactly what your car makes. 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.
We use essential cookies to make this site work. With your consent we also use cookies to measure traffic and improve our marketing. See our Privacy Policy.
·
★ 4.9 · 264+ Google reviews
·
In-house 4WD dyno · before & after printout
·
BMW ECU unlocking · in-house, same day
·
0% finance with Bumper · spread it over 6 months
·
10,000+ vehicles tuned · 14+ years
·
BMW & VAG specialists · Warrington
·
Pay with 