Powertrains BMW 3-series G20G21

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Remapping

Custom Tuning for All Modern Petrol and Diesel EFI Vehicles. Every Remap is a one, no off the shelf tuning!

VAG Tuning

Audi, VW, Seat, Skoda, Bentley, Lamborghini & Ducati Performance Tuning

BMW & MINI Tuning

BMW, Rolls & MINI Performance Tuning
South Wales leading Independent BMW and Mini Experts

Ford Tuning

Tuning for Ford Vehicles
Ford Custom - Ranger - ST - RS - Cosworth

Gearbox Tuning

DSG, DCT and Automatic Gearbox Tuning

Classic & Vintage Tuning

Rolling Road Tuning for Classic and Vintage Car and Vans. From Carbs to Injection Pumps we're happy to help

Motorsport Tuning

Tuning for Motorsport and Standalone ECUs

Dyno Sessions

Our braked dyno is available for Power Runs, Quarter Mile Tests and available with full datalogging capabilities for daily hire.

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Services
- Services
  
  We offer a wide range of services to keep your vehicle running performing at its best
- Emission Control
  
  DPF, EGR & AdBlue Solutions
  
  DPF Removal
  
  Adblue Delete
  
  EGR Repairs
  
  CAT Deletes
- Carbon Cleaning
  
  Walnut Blasting
  
  Ultrasonic Cleaning
  
  Steam Cleaning
  
  Upgrade Fitting
  
  Motorsports Services
- Free Fault Assesment
  
  Engine Check Over
  
  Vehicle Servicing
  
  Gearbox Servicing
  
  Brake Disc Skimming
  
  Carb Servicing
- ECU Testing
  
  Injector Testing
  
  Advanced Diagnostics
  
  Coding/Programming
  
  Immobiliser Faults
  
  Engine Rebuilds
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Find My Car

BMW 3-SERIES G20G21 Powertrains

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BMW 3-SERIES
GEN 3-SERIES

BMW > 3-SERIES > G20G21

BMW 3-SERIES
G20G21
18d 150hp (110kW) 320Nm (Diesel)
BMW 3-SERIES
G20G21
20d 190hp (140kW) 400Nm (Diesel)
BMW 3-SERIES
G20G21
20i (B48) 184hp (135kW) 290Nm (Petrol)
BMW 3-SERIES
G20G21
30d 265hp (195kW) 620Nm (Diesel)
BMW 3-SERIES
G20G21
30i (B48) 258hp (190kW) 350Nm (Petrol)
BMW 3-SERIES
G20G21
BMW 3 serie 318i 156hp
BMW 3-SERIES
G20G21
BMW 3 serie 330e Hybrid 292hp
BMW 3-SERIES
G20G21
BMW 3 serie M340i 374hp

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Llandow Tuning

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Performance

ECU Remapping
Gearbox Tuning
Vintage and Classic Tuning
Motorsport Tuning
Dyno Sessions

Services

All Our Services
DPF Diagnostics
AdBlue Diagnostics
EGR Diagnostics
O2 Sensor Deletes
Walnut Blasting
ECU Testing and Repairs

Tuning Near You

Swansea
Cardiff
Bridgend
Newport
Rhondda
Carmarthenshire
Monmouthshire
Torfaen
Vale of Glamorgan
Neath Port Talbot
Caerphilly
Powys
Pembrokeshire
Our Competitors

Technical Resrouces

DTC Error Codes
HP Calculators
Pressure Calculators
MAF Tester
File Service

Common Issues

BMW N55 Issues
VAG 2.0 TFSI Issues

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© 2025 Llandow Tuning Ltd - Llandow Tuning and Jorgensen Tuning are trading styles of Llandow Tuning Ltd.

Llandow Tuning specialises in vehicle modifications. Our work often involves altering a vehicle from its factory specifications, typically for motorsport or fast road use.
All modifications and tuning are carried out at the owner's risk. Customers should fully understand and accept these risks before work begins.
Dyno and rolling road use is at the owner's risk. Any damage caused to the dyno, dyno cell, or due to fluid spills must be paid for before the vehicle is released.
It is the customer's responsibility to ensure the vehicle is ready for tuning/dyno time and free from fluid leaks unless otherwise agreed in writing beforehand.
GDPR Policy - All work is conducted under the assumption that the customer has read and agreed to our Terms and Conditions and reviewed our FAQ section, which addresses the most common queries.