BMW 430d with the N57 30d engine on the DC Remapping 4WD dyno

BMW N57 30D Specialists

BMW 330d & 530d Stage 1 Custom Dyno Tuning

Custom Dyno Tune & xHP Gearbox SoftwareThe N57 30d is one of BMW's most capable diesel engines, but it leaves significant performance on the table from the factory. Our custom live dyno calibration transforms it into a genuinely rapid machine.

330bhpStage 1

690NmTorque

1000+N57s Tuned

Book Your 30d In See Pricing Below

4WD Linked Dyno
xHP Gold Dealer
Full MOT Compliance
No Generic Files
Sub-5s 0–60 Possible

The Platform

BMW N57 30D Engine

The 3.0-litre straight-six single turbo diesel controlled by the Bosch ECU, paired with the ZF8 automatic transmission. BMW quotes 258bhp and 560Nm, on our 4WD dyno we typically see 250–260bhp and 550–560Nm from stock.

3.0LStraight-Six

SingleTurbo Diesel

ZF8Auto Gearbox

xDrive4WD (Most Models)

Covers: BMW 330d · 430d · 530d · X3 30d · X5 30d · X6 30d (F-Series)

Our tuning process

Watch it on our dyno

Tuning Options

Choose Your Stage

All remaps are built live on our 4WD linked rolling road, custom-calibrated to your exact car on the day, not a generic file from a database.

Stage 1 Most Popular

Stage 1 ECU Remap

No hardware mods required

Up to330bhp

Up to690Nm

Custom live dyno calibration, built on your car
Before & after dyno printout included
Full health check before tuning begins
Factory emissions systems kept intact
Full MOT compliance maintained
Sharper throttle, stronger midrange

From £449standalone

Finance available

Get a Quote →

Stage 2

Stage 2 ECU Remap

Supporting hardware required

Up to340bhp

Up to730Nm

Everything in Stage 1
Mod required: DPF removal, off road use only
Bespoke setup tailored to your build
Maximum safe power extraction
Fully dyno-developed and verified
Quoted per vehicle and setup

POACall or WhatsApp: 01925 819002

Enquire Now →

Best Value Package

Engine + Gearbox Package

The most popular combination we offer. ECU and gearbox tuned together as one synchronised system, delivering a driving experience that neither can achieve alone.

Save £125 when booked together

Engine +
Gearbox

Stage 1 ECU RemapCustom live dyno calibration. Before & after printout included.
xHP Gearbox Tune (Stage 2)Launch control, faster shifts, torque limits raised to match engine output.
Pre-tuning health checkFull diagnostic scan included as standard, no extra charge.

£774Save £125 vs individual pricing

£649

Finance available

Get a Quote →Book Now

Official xHP Dealer

xHP Gearbox Tuning (ZF8)

The ZF8 automatic gearbox across the 30d lineup is an exceptionally capable transmission, and when paired with xHP software, it transforms completely. Available in Stage 1, 2, and 3.

Faster, sharper gear changesShift speed dramatically reduced across all driving modes.
Torque limit removalGearbox calibrated to properly handle Stage 1 and Stage 2 power output.
Launch control unlockedCustom launch RPM for consistent, repeatable performance starts.
The gearbox can handle up to 900NmPerfectly suited to both Stage 1 and Stage 2 engine calibrations.

ST1Shift optimisation

ST2Launch control

ST3Max performance

Gold

xHP Gold Dealer
Compatible with ZF8 automatic gearboxes across the entire BMW 30d range. From £325. Best results when combined with a Stage 1 ECU remap.

Get a Gearbox Quote →BMW Gearbox Remap →

Dyno Tuning & Safety

Every Tune Done Right

We don't flash files and send you on your way. Every BMW 30d is tuned live on our 4WD rolling road with full diagnostics before we touch a single parameter.

Full Diagnostics First

Comprehensive diagnostic scan, live data check, and health assessment before any tuning begins. If there's a problem, we'll find it and tell you honestly.

4WD Linked Rolling Road

Every xDrive BMW is tuned on our mechanically linked 4WD dyno, not a 2WD roller that stresses the transfer box. Accurate, real-world results every time.

Before & After Printout

You receive a dyno graph showing your exact stock and tuned figures. Real numbers, not estimated gains or marketing claims.

Measured on our dyno

BMW 30d results from our own dyno

We have been tuning BMW’s 3.0 diesels for over 15 years, from the N57 30d through to the B57 that replaced it. Every car below is a customer car, run on our in-house 4WD dyno in Warrington before and after the map. These are the printed figures.

BMW 430d xDrive

F-Series · N57 3.0 diesel · Stage 1 + xHP ST3

Power: ~~255.9~~328.4+72.5
Torque: ~~577~~701+124

Read the build On our results page

BMW 530d xDrive

G30 · B57 3.0 diesel · Stage 1 + xHP ST3

Power: ~~266.5~~330.1+63.6
Torque: ~~637~~754+117

Read the build On our results page

BMW 730d

F01 · N57 3.0 diesel · Stage 1 + xHP ST3

Power: ~~249.6~~325.6+76.0
Torque: ~~552~~708+156

Read the build On our results page

The 30d in numbers

Engine: N57 3.0 (F-series) and B57 3.0 (G-series) straight-six turbo diesel
Found in: 330d, 430d, 530d, 730d, X3, X5 and X6 30d
Standard: N57: 258bhp · 560Nm | B57: 265–286bhp
Our Stage 1: N57: 330bhp · 690Nm (509 lb-ft)
B57: 330bhp · 720Nm (531 lb-ft)
Gearbox: ZF 8HP automatic · xHP £325 F-series, £385 G-series
ECU: N57: Bosch EDC17CP45 · B57: Bosch MD1CP032
Locked ECU?: Cars built from around June 2020 have a locked ECU. We unlock it on our own bench, same day, for £100 on top of your tune. Cars built from June 2026 use a newer lock that can’t be opened yet. Check your reg
Stage 1 price: £449, custom mapped on our dyno

What 30d owners say on Google

4.9 from 269+ Google reviews

★★★★★

Had my 66 plate F30 BMW 330d boosted by DC's Stage 1 remap and Stage 3 gearbox today. Absolutely fantastic results that exceeded my expectations by a long way. Power up from 259bhp to 332bhp and torque increased from 575Nm to 711Nm. Car is totally transformed and pulls so strongly on the road. I cannot recommend these guys enough, quality service and results that are worth every penny.

Super Brit · BMW 330d F30 · Google review

★★★★★

Daniel did a brilliant job on my BMW 430d carrying out a stage 1 remap + xHP 3 increasing bhp to 328 & torque to 701. Wouldn't hesitate to recommend.

Max Collins · BMW 430d · Google review

★★★★★

Highly recommend anyone with a N57 to get your car mapped here! Took my 430d after owning for 2 years and eyeing this company finally took the plunge to start off with a stage 1 and xhp stage 3 map. Process from start to finish was very easy, car is mapped to what it should be, healthy and performing and driving 10x better. Managed to get over 330bhp and over 720nm of torque which has been a game changer!

Habz Fitness · BMW 430d · Google review

★★★★★

Fantastic service, so easy to book online. Dyno print out before and after and even updated the drive sports displays! My 430d X is transformed

Mike Nelson · BMW 430d xDrive · Google review

★★★★★

330d stage 1 map and xhp box tune, happy with the results and probably a little more than I was expecting, nice little waiting room with TV and drink and car feels great without such a massive expense like some places, recommend to anyone

Daniel · BMW 330d · Google review

★★★★★

Absolutely brilliant service from DC Tuning. Took my BMW 330d in and the whole experience was spot on from start to finish. The team were professional, knowledgeable, and took the time to explain everything clearly. The tuning has completely transformed the car — noticeably smoother power delivery, stronger performance, and it feels much more responsive to drive while still feeling refined and reliable. Communication was excellent throughout and you can tell they genuinely know their stuff and take pride in their work. Couldn’t be happier with the results and would highly recommend DC Tuning to anyone looking for quality, trustworthy performance tuning.

Dominic Cudmore · BMW 330d · Google review

Quoted word for word from our Google reviews. Read them all on Google.

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FAQs

BMW 30d Tuning Questions

How much power will a Stage 1 remap add to my BMW 30d?

Our Stage 1 maps are custom-built on our in-house 4WD dyno and tailored to your exact BMW 30d, never a generic off-the-shelf file. You'll see a substantial, fully dyno-proven gain in both power and torque; the headline figures for this platform are shown at the top of this page. Because every map is refined over multiple runs, the results are realistic, repeatable and safe.

Is remapping my BMW 30d safe and reliable?

Yes. We tune strictly within the safe mechanical limits of your BMW 30d's engine and gearbox, monitoring temperatures, pressures and torque loads across multiple dyno pulls. We've spent 15+ years tuning these platforms, so our maps prioritise long-term reliability alongside performance.

Will a remap affect my warranty or insurance?

A remap is an aftermarket modification, so it's the owner's responsibility to declare it to their insurer. Our maps are fully reversible, we can return the BMW 30d to its factory software whenever you need, for example before a main-dealer visit.

Is the remap reversible?

Completely. It is fully reversible: your BMW 30d can be put back to its factory software at any time.

Will tuning improve my BMW 30d's fuel economy?

We tune for performance, not fuel economy, so we don’t promise or guarantee any MPG saving. How much fuel the car uses comes down mostly to how it’s driven, and using the extra performance will use more.

How long does it take, and do you tune on a dyno?

Most Stage 1 tunes are completed within a few hours; allow up to a day for combined ECU and gearbox work. Every BMW 30d is mapped on our in-house 4WD dyno in Warrington, never on the road, so the result is measured and consistent. You're welcome to relax in our customer waiting area while we work.

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