KWP2000 Plus ECU Flasher Tool Review

The KWP2000 Plus is an easy to use tool which can read and write data stored on a cars ECU. This article will cover:

• What the KWP2000+ tool does
• Supported vehicles & ECUs
• What is included in the kit
• Limitations
• How easy it is to use

I briefly mentioned the KWP2000+ ECU flasher in my previous post on DIY remapping your Peugeot 306 HDi but didn't really go into much detail about what this tool can do or how easy it is to use. That post got quite a lot of traffic and I had a few questions so I thought it would be useful to do a dedicated post all about the KWP2000 plus.

What does it do?

The KWP2000+ is a compact and affordable tool which connects to your vehicles ECU via the OBDII port and allows you to read and write data on the ECU. It must be used in conjunction with a Windows PC/Laptop with a USB port as this is where the tool reads to and writes from.

The data which can be read by the KWP includes parameters and tables which control the injection timings, torque limiters, speed limiters, ignition advance and many more depending on the ECU in question.

The KWP2000+ does not give you the direct ability to edit these values, it only enables you to read the data from the ECU and then write new data onto the ECU.

The tool is commonly used by enthusiasts to 'remap' their vehicles ECU for performance or economy gains. The benefits of remapping an ECU are huge and deserve a post or three dedicated to them but here are just a few:

• Increase in BHP
• Increase in torque
• Better throttle response
• Wider power band
• Increase in MPG

What's included in the kit?

The exact contents of each kit from can vary from store to store so watch out but generally this is what is included:

• KWP2000 Plus ECU interface device
• Shielded USB cable to enable connection of interface to PC/laptop
• OBDII connection cable
• 20 pin BMW connection cable
• 38 pin Mercedes connection cable
• Software CD
• Lighter to female banana cable

Is it compatible with my car?

The KWP2000+ has support for 44 types of ECU, click here to see the full list.

Limitations

• Not all ECU's can be flashed over the vehicles OBDII port, however they can be flashed if the ECU is removed from the car.
• Memory back up is not supported by all ECU's listed in the above link.

How easy is it to use?

Very! The software can be a little daunting but if you follow the official instructions all will become clear. It is really only a case of:

1. Installing the drivers and software on your computer
2. Connecting the KWP2000 to your computer via USB and to the ECU via OBDII
3. Choosing the correct ECU from a list in the software
4. Clicking 'read' and choosing where to save the file on your computer.

Writing the data back to the ECU is a similarly simple process. I can't imagine it being much more straight forward.

Before starting the process there's some important information on the steps you should take to prepare your laptop/PC for reading/writing to the vehicles ECU in another blog post located here.

Any questions or comments? Leave a comment below.

KWP2000 Plus Flash Tool Supported Vehicles

The KWP2000+ is an affordable ECU flasher which can read and write data from a vehicles ECU via the OBDII port. For more information about the KWP2000 Plus check out our full review article here. This is a list of all vehicles supported by the tool including the ECU model (ordered by ECU model).


Fiat/Alfa:
Alfa Romeo 145 1.4 Bosch M1.5.5
Alfa Romeo 145 1.6 Bosch M1.5.5
Alfa Romeo 146 1.4 Bosch M1.5.5
Alfa Romeo 146 1.6 Bosch M1.5.5
Alfa Romeo 146 1.8 Bosch M1.5.5
Alfa Romeo 146 2.0 Bosch M1.5.5
Alfa Romeo 156 1.6 Bosch M1.5.5
Alfa Romeo 156 1.8 Bosch M1.5.5
Alfa Romeo 156 2.0 Bosch M1.5.5
Alfa Romeo 166 2.0 Bosch M1.5.5
Alfa Romeo 166 2.0 Bosch M1.5.5
Alfa Romeo GTV 1.8 TS 16V Bosch M1.5.5
Alfa Romeo GTV 2.0 TS 16V Bosch M1.5.5
Alfa Romeo GTV 3.0 TS 16V Bosch M1.5.5
Alfa Romeo Spider 1.8 TS Bosch M1.5.5
Alfa Romeo Spider 2.0 TS 16V Bosch M1.5.5
Alfa Romeo Spider3.0 TS 16V Bosch M1.5.5
Fiat Bravo/Brava 1.2 Bosch M1.5.5

Fiat/Alfa/Lancia:
Alfa Romeo 145 1.9 JTD Bosch EDC15C5
Alfa Romeo 146 1.9 JTD Bosch EDC15C5  
Alfa Romeo 156 1.9 JTD Bosch EDC15C5
Alfa Romeo 156 2.4 JTD Bosch EDC15C5
Alfa Romeo 166 2.4 JTD Bosch EDC15C5
Fiat Bravo/Brava 1.9 JTD Bosch EDC15C5
Fiat Multipla 1.9 JTD Bosch EDC15C5
Fiat Marea 1.9 JTD Bosch EDC15C5
Fiat Marea 2.4 JTD Bosch EDC15C5
Lancia K 2.4 JTD Bosch EDC15C5
Lancia Lybra 1.9 JTD Bosch EDC15C5
Lancia Lybra 2.4 JTD Bosch EDC15C5
Lancia Z 2.0 JTD Bosch EDC15C5

Smart:
MCC Smart Smart 0.7 Bosch MEG1.1

Fiat:
Fiat Punto 1.9 JTD Bosch EDC15C6
Fiat Punto 1.9 JTD Bosch EDC15C7

Fiat/Alfa/Lancia:
Alfa Romeo 147 1.9 JTD 16V Bosch EDC15C7
Alfa Romeo 147 1.9 JTD 8V Bosch EDC15C7
Alfa Romeo 156 1.9 JTD Bosch EDC15C7
Alfa Romeo 156 2.4 JTD Bosch EDC15C7
Alfa Romeo 166 2.4 JTD Bosch EDC15C7
Fiat Bravo/Brava 1.9 JTD Bosch EDC15C7
Fiat Doblo 1.9 JTD Bosch EDC15C7
Fiat Ducato 2.0 JTD Bosch EDC15C7
Fiat Ducato 2.3 JTD Bosch EDC15C7
Fiat Ducato 2.8 JTD Bosch EDC15C7
Fiat Marea 1.9 JTD Bosch EDC15C7
Fiat Marea 2.4 JTD Bosch EDC15C7    
Fiat Multipla 1.9 JTD Bosch EDC15C7
Fiat Scudo2.0 JTD Bosch EDC15C7
Fiat Stilo 1.9 JTD Bosch EDC15C7
Lancia Lybra 1.9 JTD Bosch EDC15C7
Lancia Lybra 2.4 JTD Bosch EDC15C7
Lancia Thesis 2.4 JTD Bosch EDC15C7

Fiat/Lancia:
Fiat Punto 1.2 Bosch ME7.2.1 Euro2
Lancia Y 1.2 Bosch ME7.2.1 Euro2

Fiat/Lancia:
Fiat Punto 1.2 Bosch ME7.H3
Fiat Stilo 2.4 Bosch ME7.3.1
Lancia Y 1.2 Bosch ME7.H3

Citroen/Peugeot/Fiat/Lancia:
Citroen Berlingo 2.0 HDI Bosch EDC15C2
Citroen C5 2.0 HDI Bosch EDC15C2
Citroen C5 2.2 HDI Bosch EDC15C2
Citroen C8 2.0 HDI Bosch EDC15C2
Citroen Evasion 2.0 HDI Bosch EDC15C2
Citroen Jumper 2.0 HDI Bosch EDC15C2
Citroen Jumper 2.2 HDI Bosch EDC15C2
Citroen Jumper 2.8 HDI Bosch EDC15C7
Citroen Jumpy 2.0 HDI Bosch EDC15C2
Citroen Picasso 2.0 HDI Bosch EDC15C2
Citroen Synergie 2.0 HDI Bosch EDC15C2
Citroen Xantia 2.0 HDI Bosch EDC15C2
Citroen Xsara 2.0 HDI Bosch EDC15C2
Citroen Xsara Picasso 2.0 HDI Bosch EDC15C2
Fiat Ulysse 2.0 JTD 16V Bosch EDC15C2    
Fiat Ulysse 2.2 JTD 16V Bosch EDC15C2
Lancia Phedra 2.0 JTD Bosch EDC15C2
Lancia Phedra 2.2 JTD Bosch EDC15C2
Peugeot 206 2.0 HDI Bosch EDC15C2
Peugeot 306 2.0 HDI Bosch EDC15C2
Peugeot 307 2.0 HDI 110PS Bosch EDC15C2
Peugeot 406 2.0 HDI Bosch EDC15C2
Peugeot 406 2.2 HDI Bosch EDC15C2
Peugeot 607 2.0 HDI Bosch EDC15C2
Peugeot 607 2.2 HDI Bosch EDC15C2
Peugeot 807 2.0 HDI Bosch EDC15C2
Peugeot 807 2.2 HDI Bosch EDC15C2
Peugeot Boxer 2.0 HDI Bosch EDC15C2
Peugeot Expert 2.0 HDI Bosch EDC15C2
Peugeot Partner 2.0 HDI Bosch EDC15C2

VAG:
Audi A3 1.9 TDi VP37 Bosch EDC15V
Audi A3 1.9 TDi VP37 Bosch EDC15VM
Audi A3 1.9 TDi VP37 Bosch EDC15VM-1M
Audi A4 1.9 TDi VP37 Bosch EDC15V
Audi A4 1.9 TDi VP37 Bosch EDC15VM
Audi A4 1.9 TDi VP37 Bosch EDC15VM-1M
Audi A6 1.9 TDi PD Bosch EDC15P
Audi A6 1.9 TDi VP37 Bosch EDC15V
Audi A6 1.9 TDi VP37 Bosch EDC15VM
Audi A6 1.9 TDi VP37 Bosch EDC15VM-1M
Seat Alhambra 1.9 TDI VP37 Bosch EDC15V
Seat Alhambra 1.9 TDI VP37 Bosch EDC15VM
Seat Alhambra 1.9 TDI VP37 Bosch EDC15VM-1M    
Seat Cordoba 1.9 TDI VP37 Bosch EDC15V
Seat Cordoba 1.9 TDI VP37 Bosch EDC15VM
Seat Cordoba 1.9 TDI VP37 Bosch EDC15VM-1M
Seat Ibiza 1.9 TDI VP37 Bosch EDC15V
Seat Ibiza 1.9 TDI VP37 Bosch EDC15VM
Seat Ibiza 1.9 TDI VP37 Bosch EDC15VM-1M
Seat Leon 1.9 TDI VP37 Bosch EDC15V
Seat Leon 1.9 TDI VP37 Bosch EDC15VM
Seat Leon 1.9 TDI VP37 Bosch EDC15VM-1M
Seat Toledo1.9 TDI VP37 Bosch EDC15V
Seat Toledo1.9 TDI VP37 Bosch EDC15VM
Seat Toledo1.9 TDI VP37 Bosch EDC15VM-1M
Skoda Fabia 1.9 TDI VP37 Bosch EDC15V
Skoda Fabia 1.9 TDI VP37 Bosch EDC15VM
Skoda Fabia 1.9 TDI VP37 Bosch EDC15VM-1M
Skoda Octavia 1.9 TDI VP37 Bosch EDC15V
Skoda Octavia 1.9 TDI VP37 Bosch EDC15VM
Skoda Octavia 1.9 TDI VP37 Bosch EDC15VM-1M
VW Bora 1.9 TDI VP37 Bosch EDC15V
VW Bora 1.9 TDI VP37 Bosch EDC15VM
VW Bora 1.9 TDI VP37 Bosch EDC15VM-1M
VW Golf 4 1.9 TDI VP37 Bosch EDC15V
VW Golf 4 1.9 TDI VP37 Bosch EDC15VM
VW Golf 4 1.9 TDI VP37 Bosch EDC15VM-1M
VW New Beetle 1.9 TDI VP37 Bosch EDC15V
VW New Beetle 1.9 TDI VP37 Bosch EDC15VM
VW New Beetle 1.9 TDI VP37 Bosch EDC15VM-1M
VW Passat 1.9 TDIVP37 Bosch EDC15V
VW Passat 1.9 TDI VP37 Bosch EDC15VM    
VW Passat 1.9 TDI VP37 Bosch EDC15VM-1M
VW Sharan 1.9 TDI VP37 Bosch EDC15V
VW Sharan 1.9 TDIVP37 Bosch EDC15VM
VW Sharan 1.9 TDI VP37 Bosch EDC15VM-1M

Alfa/Lancia:
Alfa Romeo 147 1.6 Bosch ME7.3.1
Alfa Romeo 147 2.0 TS Bosch ME7.3.1
Alfa Romeo 156 1.6 Bosch ME7.3.1
Alfa Romeo 156 1.8 Bosch ME7.3.1
Alfa Romeo 156 2.0 Bosch ME7.3.1
Alfa Romeo 166 2.0 Bosch ME7.3.1
Alfa Romeo 166 2.5 Bosch ME7.3.1
Alfa Romeo 166 3.0 Bosch ME7.3.1
Alfa Romeo GTV 2.0 TS 16V Bosch ME7.3.1
Alfa Romeo GTV 3.0 TS 16V Bosch ME7.3.1
Alfa Romeo Spider 2.0 TS 16V Bosch ME7.3.1
Alfa Romeo Spider 3.0 TS 16V Bosch ME7.3.1
Lancia Lybra 2.0 Bosch ME7.3.1
Lancia Thesis 2.0 Turbo Bosch ME7.3.1

Chrysler:
Chrysler Grand Cherokee 2.7 CRD Bosch EDC15C2
Chrysler Jeep Cherokee 2.5 CRD Bosch EDC15C2
Chrysler Jeep Cherokee 2.8 CRD Bosch EDC15C2
Chrysler PT Cruiser 2.2 CRD Bosch EDC15C2
Chrysler Voyager 2.5 CRD Bosch EDC15C2

Mercedes:
Mercedes A-Class1.7 CDI Bosch EDC15C6
Mercedes C-Class (W201) 2.2 CDI Bosch EDC15C6
Mercedes C-Class (W201) 2.7 CDI Bosch EDC15C6    
Mercedes C-Class (W203) 2.0 CDI Bosch EDC15C6
Mercedes C-Class (W203) 2.2 CDI Bosch EDC15C5
Mercedes C-Class (W203) 2.2 CDI Bosch EDC15C6
Mercedes C-Class (W203) 2.7 CDI Bosch EDC15C6
Mercedes C-Class (W203) 3.2 CDI Bosch EDC15C6
Mercedes E-Class (W210) 2.0 CDI Bosch EDC15C6
Mercedes E-Class (W210) 2.2 CDI Bosch EDC15C6
Mercedes E-Class (W210) 2.7 CDI Bosch EDC15C6
Mercedes E-Class (W210) 3.2 CDI Bosch EDC15C6
Mercedes G-Class 2.7 CDI Bosch EDC15C6
Mercedes G-Class 4.0 CDI Bosch EDC15C6
Mercedes M-Class 2.7 CDI Bosch EDC15C6
Mercedes ML-Class 2.7 CDI Bosch EDC15C6
Mercedes ML-Class 4.0 CDI Bosch EDC15C6
Mercedes S-Class (W280) 3.2 CDI Bosch EDC15C6
Mercedes S-Class (W280) 4.0 CDI Bosch EDC15C6
Mercedes V-Class2.0 CDI Bosch EDC15C6
Mercedes V-Class2.2 CDI Bosch EDC15C6
Mercedes Vito 2.2 CDI Bosch EDC15C6
Mercedes A-Class1.7 CDI Bosch EDC15C5
Mercedes C-Class (W201) 2.2 CDI Bosch EDC15C5
Mercedes M-Class 3.2 CDI Bosch EDC15C
Mercedes Sprinter 2.2 CDI Bosch EDC15C
Mercedes V-Class2.2 CDI Bosch EDC15C5
Mercedes Vito 2.2 CDI Bosch EDC15C5

Smart:
MCCSmart CDI 0.9 CDI EDG15C5

VAG:
Audi A2 1.4 TDi PD Bosch EDC15P
Audi A3 1.9 TDi PD Bosch EDC15P
Audi A4 1.9 TDi PD Bosch EDC15P
Seat Alhambra 1.9 TDI PD Bosch EDC15P
Seat Cordoba 1.9 TDI PD Bosch EDC15P
Seat Ibiza 1.9 TDIPD Bosch EDC15P
Seat Leon 1.9 TDI PD Bosch EDC15P
Seat Toledo 1.9 TDI PD Bosch EDC15P
Skoda Fabia 1.9 TDI PD Bosch EDC15P
Skoda Octavia 1.9 TDI PD Bosch EDC15P
VW Bora 1.9 TDI PD Bosch EDC15P
VW Golf 4 1.9 TDI PD Bosch EDC15P
VW Lupo 1.2 TDI PD Bosch EDC15P
VW Lupo 1.4 TDI PD Bosch EDC15P
VW New Beetle 1.9 TDI PD Bosch EDC15P
VW Passat 1.9 TDI PD Bosch EDC15P
VW Polo 1.4 TDI PD Bosch EDC15P
VW Polo 1.9 TDI PD Bosch EDC15P
VW Sharan 1.9 TDI PD Bosch EDC15P

VAG:
Audi A4 2.5 TDi VP44 Bosch EDC15P
Audi A6 2.5 TDi VP44 Bosch EDC15P
Audi A8 2.5 TDi VP44 Bosch EDC15P
Audi Quattro 2.5 TDi V6 Bosch EDC15P
VW Passat 2.5 TDI VP37 Bosch EDC15P
VWT4 Bus 2.5 TDI VP44 Bosch EDC15P

BMW:
BMW Series 3 (E46) 2.0 D (318d) Bosch DDE3.0
BMW Series 5 (E39) 2.0 D Bosch EDC15
     
Audi/VW:
Audi/Volkswagen1.8T Bosch ME7.5

Opel/Renault:
Opel Vivaro 1.9 16V DI Bosch EDC15C2
Renault Espace 1.9 dCi Bosch EDC15C2
Renault Espace 2.2 dCi Bosch EDC15C2
Renault Kangoo1.9 dCi Bosch EDC15C2
Renault Laguna 1.9 dCi Bosch EDC15C2
Renault Megane 1.9 dCi Bosch EDC15C2
Renault Scenic 1.9 dCi Bosch EDC15C2
Renault Scenic 1.9 dTi Bosch EDC15C2
Renault Trafic 1.9 dCi Bosch EDC15C2

Opel:
Opel Astra F (4) 1.7 16V DTI Bosch EDC15M
Opel Astra F (4) 2.0 16V DI Bosch EDC15M
Opel Astra F (4) 2.2 16V DI Bosch EDC15M
Opel Astra G 1.7 16V DI Bosch EDC15M
Opel Astra G 2.0 16V DI Bosch EDC15M
Opel Frontera 2.2 DTI Bosch EDC15M
Opel Vectra B 1.7 16V DI Bosch EDC15M
Opel Vectra B 2.0 16V DI Bosch EDC15M
Opel Vectra C 2.0 16VDI Bosch EDC15M
Opel Vectra C 2.0 16V DTI Bosch EDC15M
Opel Zafira 2.0 16V DI Bosch EDC15M

Ford:
Ford Galaxy1.9 TDi PD Bosch EDC15P

Nissan:
Nissan Almera Tino 2.0 Bosch EDC15C2
Nissan X-Trail 2.2 Bosch EDC15C2
     
Fiat/Alfa/Lancia:
Alfa Romeo 156 2.0 Bosch ME3.1
Alfa Romeo 166 2.5 V6 24V Bosch ME3.1
Alfa Romeo GTV3.0 V6 24VBosch ME3.1
Alfa Romeo Spider 3.0 V6 24V Bosch ME3.1
Fiat Bravo/Brava 2.0 Bosch ME7.3.1
Fiat Bravo/Brava 2.0 20V Bosch ME3.1
Fiat Coupe 2.0 20V Bosch ME3.1
Fiat Marea 2.4 MDI 20V Bosch ME3.1
Lancia Lybra 2.0 i 20V Bosch ME3.1

Alfa Romeo:
Alfa Romeo 156 2.5 Bosch ME2.1
Alfa Romeo 166 2.0 V6 Turbo Bosch ME2.1
Alfa Romeo 166 2.5 V6 24V Bosch ME2.1
Alfa Romeo 166 3.0 V6 24V Bosch ME2.1

BMW:
BMW Series 3 (E36) 2.0 i Siemens MS41
BMW Series 3 (E36) 2.5 i Siemens MS41
BMW Series 3 (E36) 2.8 i Siemens MS41
BMW Series 5 (E39) 2.0 i Siemens MS41
BMW Series 5 (E39) 2.5 i Siemens MS41
BMW Series 7 (E38) 2.8 i Siemens MS41
BMW Z3 Roadster 2.0 Siemens MS41
BMW Z3 Roadster 2.8 Siemens MS41

Opel:
Opel Coupe Turbo --- ME1.5.5

Opel:
Opel Astra F (4) 1.8 16V Siemens Simtec70
Opel Astra F (4) 2.0 16V Siemens Simtec70    
Opel Astra G 1.8 16V Siemens Simtec70
Opel Astra G 2.0 16V Siemens Simtec70
Opel Omega B 2.0 16V Siemens Simtec70
Opel Vectra B 1.8 16V Siemens Simtec70
Opel Vectra B 2.0 16V Siemens Simtec70
Opel Vectra C 1.8 16V Siemens Simtec70
Opel Vectra C 2.0 16V Siemens Simtec70
Opel Zafira 1.8 16V Siemens Simtec70
Opel Zafira 2.0 16V Siemens Simtec70

Opel:
Opel AstraF (4) 1.7 16V DTI Delco Y17DT
Opel CorsaB 1.7 16V Delco Y17DT
Opel Zafira 1.7 16V DelcoY17DT

Ferrari:
Ferrari Modena 3.6 Bosch ME7.3H4

Rover:
Rover 75 2.0 CDT Bosch DDE4.0
Rover 75 Tourer 2.0 CDT Bosch DDE4.0

Opel:
Opel Astra G 1.2 16V Bosch M1.5.5
Opel Corsa B 1.0 12V Bosch M1.5.5
Opel Corsa B 1.2 16V Bosch M1.5.5
Opel Corsa C 1.0 12V Bosch M1.5.5
Opel Corsa C 1.2 16V Bosch M1.5.5

Opel:
Opel Astra F (4) 1.8 16V Siemens Simtec90
Opel Astra F (4) 2.0 16V Siemens Simtec90
Opel Astra G 1.8 16V Siemens Simtec90
Opel Astra G 2.0 16V Siemens Simtec90    
Opel Omega B 2.0 16V Siemens Simtec90
Opel Vectra B 1.8 16V Siemens Simtec90
Opel Vectra B 2.0 16V Siemens Simtec90
Opel Vectra C 1.8 16V Siemens Simtec90
Opel Vectra C 2.0 16V Siemens Simtec90
Opel Zafira 1.8 16V Siemens Simtec90
Opel Zafira 2.0 16V Siemens Simtec90

Hyundai/Kia:
Hyundai Accent 1.5 CRDI Bosch EDC15C2
Hyundai Elantra 2.0 CRDI Bosch EDC15C2
Hyundai Matrix 1.5 CRDI Bosch EDC15C2
Hyundai Santa Fe2.0 CRDI Bosch EDC15C2
Hyundai Trajet 2.0 CRDI Bosch EDC15C2
Kia Carens 2.0 CRDi 16V Bosch EDC15C2
Kia Sorento 2.5 CRDi Bosch EDC15C2

Volvo:
Volvo V40 2.0 TDI Bosch EDC15C3

BMW/Rover:
BMW Series 3 (E46) 3.0 D Bosch DDE4.0
BMW Series 5 (E39) 2.5 D Bosch DDE4.0
BMW Series 5 (E39) 3.0 D Bosch DDE4.0
BMW Series 7 (E38) 3.0 D Bosch DDE4.0
BMW Series X5 (E53) 3.0 D Bosch DDE4.0
Land Rover Freelander 2.0 CDT Bosch DDE4.0

Mini:
Mini Cooper 2.0 D Bosch EDC15C2 DDE

Opel:
Opel Astra F (4) 1.4 16V Delco
Opel Astra F (4) 1.6 16V Delco    
Opel Vectra B 1.4 16V Delco
Opel Vectra B 1.6 16V Delco

BMW:
BMW Series 3 (E36) 1.8 i Bosch ME5.2.1b
BMW Z3 Roadster 1.9 Bosch ME5.2.1b

Izuzu:
Izuzu 2.0 16V DI Bosch EDC15M

BMW:
BMW Series 3 (E36) 2.0i Siemens Ms43
BMW Series 3 (E36) 2.5i Siemens Ms43
BMW Series 3 (E36) 2.3i Siemens Ms43
BMW Series 3 (E36) 2.8i Siemens Ms43
BMW Series 3 (E36) 3.0i Siemens Ms43
BMW Series 3 (E36) 3.2i Siemens Ms43
BMW Series 5 (E46) 2.0i Siemens Ms43
BMW Series 5 (E46) 2.5i Siemens Ms43
BMW Series 5 (E46) 2.3i Siemens Ms43
BMW Series 5 (E46) 2.8i Siemens Ms43
BMW Series 5 (E46) 3.0i Siemens Ms43
BMW Series 5 (E46) 3.2i Siemens Ms43

Audi/Volkswagen1.9 (2,5) EC15VM+ 29F800

Guide To DIY Remapping Your Peugeot 306 HDi

Read this before attempting to ‘remap’ or flash your Peugeot 306 HDi using a ECU flashing tool such as a KWP2000+ or Galletto 1260. If you're unsure which tool to buy, check out our review of the KWP2000+. Failure to follow these pointers may result in bricking your ECU which means the car will not run at all. This will require a professional to fix and is a whole lot of hassle which can be easily avoided.

There are now many businesses which offer a DIY option for remapping your HDi at home with the use of a low-cost ecu reader/writer. The process is often that you read the original data from the ECU and send it to the tuner via email (these files are very small), they will then make the necessary adjustments and send it back to you. All that needs to be done is to upload (write) this new file to the ECU and your 306 HDi is remapped.

In basic terms imagine your cars ECU is a USB drive with the map data file on it. Connecting an ecu reader/writer such as the KWP2000 or Galletto 1260 via the OBD port under the steering wheel allows you to copy or read this data file to your computer and also overwrite it.

In a nutshell - if anything goes wrong during the writing process (when you are overwriting the existing map file) there is a very high chance you will corrupt the file and the ECU will be bricked. The clue is in the name here as if this happened your ECU is about as useful as a brick (although there are ways out of this which I will cover in another post).

5 steps to reduce the risks:

1. Plug the laptop into the mains do not run it from the battery.
2. Disable the laptops wireless adapter.
3. Make sure the battery is healthy, fully charged and turn off anything that runs on it e.g. headunit, headlights.
4. Close all non-essential programs on your laptop - you want the laptop to be as stable as possible.
5. Disable any automatic updates or anything which is likely to pop-up and interrupt the writing process.

You will need to follow the instructions which came with the ECU flash tool for an exact guide of how to remap Peugeot 306 HDi but the above points are still important.

Do not touch any free maps which either come with your ECU flash tool or you find floating around the internet. Similarly, discs packed with 5,000 maps for £9.99 are best avoided. For the cost of a remap from a reputable hdi tuner it is not really worth the risk.

Please note I am not an expert and cannot be held responsible for any damage resulting from following the advice on this page.