Typical before and after power and torque for every SEAT Mii engine we tune. Your own car is custom mapped on our in-house 4WD dyno, and every map is fully reversible.
Every price on this page is a full custom dyno tune
Not a generic file bought in and flashed over the port. Your Seat Mii 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.
Seat Mii remapping questions
What gains can I expect from Stage 1 on a Seat Mii?
Every Seat Mii engine is different, which is why they are listed separately above. At the top end the 1.0i picks up 20bhp, going 60bhp to 80bhp with torque up to 100Nm.
How much is Stage 1 tuning on a Seat Mii?
A Seat Mii Stage 1 is from £449 inc VAT; gearbox software is £325 on its own, or £125 less when booked with the engine tune. Finance is 0% over 6 months with Bumper, or choose Pay in full when you book and pay with Klarna.
What happens to my warranty and insurance if I tune my Seat Mii?
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 Seat Mii can be put back to its factory software at any point.
Can the remap be reversed, and how long does it take?
Allow roughly two hours for Stage 1, including any ECU unlock on our own bench. Everything is reversible: the Seat Mii 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.
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 