BMW 320d remap Derby
190 → 230 bhp · 400 → 460 Nm · £300 – £350 · on your driveway
The B47 320d is one of the most rewarding diesels we tune. BMW leaves a generous margin in the factory map, and a Stage 1 fills in the mid-range completely — the car pulls from 1,500 rpm like a 330d and the 8-speed auto feels far more decisive once the TCU is matched.
Stock vs Stage 1
BMW 320d remap figures
- Engine
- 2.0 B47 twin-power turbo diesel
- Years
- 2015–2019 (F30 / F31 LCI)
- ECU
- Bosch EDC17C50 / MD1CS001
- Gearbox
- ZF 8HP automatic — TCU tuning available
Indicative figures from our calibration data for this platform. Your car is baseline-logged and verified on the day.
What we change
Inside the 320d Stage 1 file
- ▸Boost pressure and turbo vane control raised within turbo map
- ▸Rail pressure and injection quantity re-scaled for UK diesel
- ▸Torque limiters lifted; smoke correction tidied for cleaner regens
- ▸Throttle map and torque request sharpened
- ▸Optional ZF 8HP TCU: faster shifts, higher torque limit, sharper kickdown
Pre-map checks
What we check on a 320d first
- ▸Swirl flap / intake manifold condition
- ▸EGR cooler and valve operation
- ▸DPF soot load and regen history
- ▸Timing chain noise on higher-mileage N47 predecessors
- ▸Live boost vs requested on the baseline log
Found a fault? We quote the fix separately via mobile diagnostics — we never map an unhealthy car.
Why Derby 320d owners remap with us
Derby is an engineering city, and Derby drivers ask better questions than most — about torque curves, EGT limits and what the data-log actually shows. We like that. Daily commuters on the A38 and A50 want a Stage 1 that fills in the mid-range and settles the DSG or 8-speed auto; tradespeople in Sinfin, Alvaston and Spondon want their Transporter or Vivaro to pull properly when loaded; and performance owners in Allestree, Mickleover and Darley Abbey want Stage 2 calibrations with hardware-matched boost and logged proof of the result.
The BMW 320d is one of the vehicles we tune most around Derby, so the calibration is refined over many local data-logs on the A38, A50, A52, A6 and M1 junction 25 — not a generic file. Every 320d gets a pre-map health check, VIN-specific write and a logged verification drive on your local roads.
◉ The process
How mobile remapping works in Derby
Fixed quote from your reg
Send your registration by WhatsApp, phone or the booking form. You get a fixed, vehicle-specific price for Derby — not a 'from' figure that climbs on the day.
We come to you
We arrive at your home, workplace or yard anywhere in Derby with genuine, licensed tuning tools (not clone hardware) and a professional data-logger.
Pre-map health check
Full OBD diagnostic scan and live-data baseline log. If the DPF, EGR, turbo or sensors show a problem, we tell you before writing anything.
Read & archive your original file
Your factory ECU file is read and archived securely so the car can be returned to stock at any time — before a dealer visit or when you sell.
VIN-specific calibration written
The remap is written for your exact ECU, engine and hardware — fuelling, boost, torque limiters and timing adjusted within safe factory tolerances.
Logged verification drive
A post-map road test on local Derby roads with live data-logging. You see the before/after figures and we check knock, EGTs, boost and fuel trims are all where they should be.
◉ FAQ
BMW 320d remap Derby — FAQ
Does a 320d remap need the car to be bench-read?
Most F30 LCI B47 ECUs can be read and written via OBD. Some later MD1 ECUs require a bench or boot-mode read — we tell you before booking, and it's still done on your driveway.
Will a remap upset the 320d's 8-speed gearbox?
No — the ZF 8HP handles the extra torque easily. We recommend the TCU calibration alongside so shift points and torque limits match the new engine map.
Will my 320d still do 60 mpg after a remap?
On a motorway cruise most owners see the same or slightly better economy, because the extra torque means fewer downshifts. Drive it hard and you'll use more fuel, as with any car.
How much does a BMW 320d remap cost in Derby?
A Stage 1 remap on a BMW 320d in Derby is £300 – £350, fixed before we book. That includes the pre-map health check, VIN-specific calibration, logged verification drive and 30-day warranty. Gearbox tuning, where available, is quoted separately.
Do you come to me in Derby to remap a 320d?
Yes — we're fully mobile. We'll map your 320d on your driveway or at work anywhere in Derby, including Chaddesden, Alvaston, Mickleover, Allestree, Littleover, Spondon.
Do I need to tell my insurer about a 320d remap?
Yes — any ECU modification must be declared. Most mainstream insurers accept a Stage 1 with a small premium adjustment. We can supply a written spec for your insurer.
Can the 320d be returned to standard?
Yes. Your original file is archived and a return-to-factory takes around 30 minutes, at any time.
Stage 1 results
Other diesel remaps in Derby
Manufacturer stock output vs our typical Stage 1 calibration for each platform. Indicative figures — every car is health-checked and verified with a live road data-log, and your before/after numbers are shown to you on the day.