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Help differentiating CR/PD

Distinguishing between Common Rail (CR) 
and Unit Injector (PD)

Applicable to certain Volkswagen AG model series with 2.0 TDI engines

Several Audi, Seat, Skoda and VW model series with 2.0 TDI engines use both CR and PD ("Pumpe-Düse" / Unit injector) technology.

RaceChip chip tuning is specially customized to the applicable fuel injection technology with respect to both hardware and software. If your vehicle is specified in the list of applicable models below (all other 2.0 TDI models feature just one type of technology), it is important to determine, before choosing a tuning product, which type of injection technology is installed in your vehicle. For such models, you will therefore find the “CR” or “PD” designation after your engine code.

Performance The following Volkswagen Group model series are applicable: Engine code CR Engine code PD
100kW (136hp) Audi: A3 (8P), A6 (C6)
VW: Golf Plus, Jetta V, Passat B6 		CAGB, CBAA, CFFA AZV, BMA, BNA, BRF
103kW (140hp) Audi: A3 (8P)
Seat: Altea (5P)
Skoda: Octavia (1Z), Superb (3T)
VW: Caddy (2K, 2C), Eos (1F), Golf V,
Golf VI, Jetta V, Passat B6, Touran (1T) 		CBAB, CBDB, CFFB,
CFHC, CJAA, CLCB,
CLJA 		BKD, BKP, BMM, BMP

If your vehicle is in this list and you are not sure if it is a CR or PD version, then simply follow one of the following steps to identify CR or PD technology.

Using the engine code:

For PD models, the engine code consists of 3 characters, while for CR there are 4 characters. You can find your vehicle’s engine code in the specification sheet in your service booklet or on the data sticker in your engine bay.

Using engine images for CR and PD:

Common rail (CR)
Unit injector (PD)
Common rail engine, traverse
CR traverse
Common rail engine, longitudinal
CR longitudinal
Pumpe-Düse (PD, unit injector) engine, traverse
PD traverse
Pumpe-Düse (PD, unit injector) engine, longitudinal
PD longitudinal

Using our customer service:

If the tips above have not clarified the technology type, then please contact our Customer Service department. We will be happy to help. Contact

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Take your ride to the next level!

You are not just driving your car to get from A to B and long, winding roads make your heart leap? We are glad you found us. We will help you to unlock your engine’s maximum performance and make sure that you will never want to get out of your Alfa Romeo again.

  • Up to 30% more HP and torque RaceChip performance optimisation unlocks up to 30 % more power. ALL ABOUT CHIP TUNING
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Perfectly engineered for Alfa Romeo

Make your vehicle stronger with RaceChip

Alfa Romeo is an Italian car manufacturer belonging to the Fiat Group. Alfa Romeo has always provided a sportier line-up compared to its parent company. This is especially noticeable in that you hardly see an Alfa Romeo on the road with less than 100 HP. Only the small and compact Mito comes with a somewhat less powerful engine.

The vehicle design is fundamentally different from other car makers, and the grille in the form of a shield is especially prominent on Alfa Romeo cars.


Those who love Alfa Romeo should make it even peppier and sportier with RaceChip car chips. Then your petite Italian powerhouse can keep up with the larger saloons on the road.