Typical before and after power and torque for every Audi S8 engine we tune. Your own car is custom mapped on our in-house 4WD dyno, and every map is fully reversible.
Power & torqueindicative curve, scaled to the published figures
680 bhp from 520+160 bhp900 Nm from 650+250 Nm
720 bhp from 520+200 bhp1000 Nm from 650+350 Nm
Tuned bhpTuned NmStock bhpStock 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 & torqueindicative curve, scaled to the published figures
680 bhp from 520+160 bhp900 Nm from 650+250 Nm
720 bhp from 520+200 bhp1000 Nm from 650+350 Nm
Tuned bhpTuned NmStock bhpStock Nm
Shape is indicative. Your real before & after curves are measured on our 4WD dyno on the day and you take the printout home.
D5 (2020 onwards)
Engine
Standard
Stage 1custom dyno tuning
Stage 2custom dyno tuning
Price
S8 4.0 V83996cc - EA825 · Bosch MG1CS008 · Petrol
571 bhp 800 Nm
600 bhp+29 900 Nm+100
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£799Locked ECU on every year.£1248 with the £449 in-house unlock (same day), or £1198 with the £399 send-away unlock (3–4 working days)+ gearbox £325 S1 + gearbox £999 ›
Locked ECU? We unlock it. This 4.0 V8 has a locked ECU on every model year. Two routes, your choice when you book: £449 in-house on our bench, same day with no extra time, or £399 sent away, 3–4 working days with the car staying with us. On its own, if we’re not tuning the car, it’s £549 in-house or £499 sent away. More on unlocking →Built from June 2026? Those cars use a new ECU lock that can’t yet be opened, so we can’t tune them for now. Email sales@dcremappinguk.com with your reg and we’ll let you know as soon as that changes.
Every price on this page is a full custom dyno tune
Not a generic file bought in and flashed over the port. Your Audi S8 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 £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.
Audi S8 remapping questions
What does Stage 1 tuning do for an Audi S8?
It depends which engine you have. Across the 4 Audi S8 engines we tune, the 4.0 TFSI sees the biggest Stage 1 gain: 520bhp to 680bhp and 650Nm to 900Nm, up 160bhp. Every figure on this page is for that exact engine.
How much does it cost to remap an Audi S8?
Stage 1 custom dyno tuning on an Audi S8 starts at £449 inc VAT, and gearbox tuning is £325. Book both together and you save £125. You can spread it over 6 months at 0% with Bumper, or choose Pay in full when you book and pay with Klarna.
Does my Audi S8 need its ECU unlocking?
Quite possibly. Most Audis built from around June 2020 have a factory-locked ECU, and the 4.0 V8 TFSI cars (SQ7, SQ8, RS6, RS7, RSQ8, S8 and the V8 A8, Q7 and Q8) are locked well before that date too. We unlock them here on our own bench the same day, or send the ECU away for a lower price; the 4.0 V8 ECUs can only go the send-away route. Send us your registration and we will confirm exactly where yours stands before you book. Send us your reg and we will confirm ›
What does Stage 2 need on an Audi S8?
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 Audi S8 affect my warranty or insurance?
You will need to tell your insurer, as with any modification, and it can affect a remaining manufacturer warranty. Every map is reversible, so the Audi S8 can be put back to its factory software at any point.
How long does it take, and is it reversible?
Allow roughly two hours for Stage 1, including any ECU unlock on our own bench. Everything is reversible: the Audi S8 can go back to its factory software on request.
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.
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In-house 4WD dyno · before & after printout
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BMW ECU unlocking · in-house, same day
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0% finance with Bumper · spread it over 6 months
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10,000+ vehicles tuned · 14+ years
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BMW & VAG specialists · Warrington
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