Customer reviews
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”Very satisfied. For the first time i'm almost down to 0.5L/10km. And the car lost traction when i accelerated in first gear!“

– Alfa Gulietta

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”Went home with 265HP, came with 224, and saving over 10% fuel as well!“

– Mercedes Viano

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”Came with 116HP. Drove home with 153, and also about 30% more Nm from the bottom.“

– Toyota Previa

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”Hello. New fuel record 400km drive without even trying. Down from 0,54 to 0,5 per 10km. Much more comfortable driving with less shifting and better low end torque. Not to mention it's awesome to feel that extra kick when stepping on it! Thanks for job well done!“

– Berlingo HDI

Find your car
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Selected car

BMW 4er (G22) 440d xDrive

2993 ccm - 250 kW (340 HK) - 700 Nm

Depending on which engine you have in your car, you have different chip box options. You have 3 alternatives for your BMW 4er (G22) 440d xDrive. Please confirm that you have selected the correct engine from the vehicle list. These are the choices for (G22) 440d xDrive with 340 HP. The product images are illustrative and colors may vary from actual product.

Choose chip type. The price includes customs, taxes and fees, no surprises!
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Alternative 1

Ultimate

Ultimate

Our top model, most power and durability with quality electronics and remote control included for on/off.

GBP £329,-
yes In stock
Effect with chip
427 HP ( +26%)
Torque with chip
856 Nm ( +22%)

Alternative 2

RXT Power Booster

Pedal box for advanced fuel regulation! Fuel economy and more power in the same box. NOTE no increase in HP!

GBP £189,-
yes In stock
Discover power you didn't know your car had!

Alternative 3

RXT Ultimate

Set of both Ultimate and RXT Power Booster. Maximum effect and fuel savings controlled from your drivers seat.

GBP £419,-
yes In stock
Effect with chip
434 HP ( +28%)
Effect about 340 HP at 50% throttle

Product comparison

Ultimate

yes On/off switch
yes World's smallest design?
yes Multiple engine connections
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yes Best processor on the market
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yes Car switch warranty (-50%)
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yes Engine warranty
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yes 100% satisfaction: 30 dager
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yes Fuel savings: 5 - 20%
yes Eco-boost program
yes Water proof
yes Motor Protection System
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RXT Power Booster

yes RXT Power Booster
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yes 100% satisfaction: 14 dager
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RXT Ultimate

yes {PatentedIntegration}
yes World's smallest design?
yes Multiple engine connections
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yes Best processor on the market
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yes RXT Power Booster
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yes Car switch warranty (-50%)
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yes Engine warranty
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yes 100% satisfaction: 60 dager
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yes Fuel savings: 5 - 20%
yes Eco-boost program
yes Water proof
yes Motor Protection System
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