The CRTD4® SENT Diesel Tuning Box for BMW X5 40d xDrive (G05) 347 KW / 352 PS / 259 KW / 720 NM / 531 LBFT - From 2025 from TDI-Tuning is at the cutting edge of digital tuning box technology with the capacity to remap brand new digital sensor based engines from Audi and Porsche. Powered by a powerful 80 MHz ARM microprocessor, the CRTD4® remaps vehicle performance moment by moment based on digital data received via the engine sensor interface harness, changing the fuelling profile of the vehicle and eliminating acceleration flat spots. For this vehicle Power will be increased by +52 KW for a total of 311 KW as well as increasing torque by +101 NM for a total of 821 NM
For domestic vehicle owners the CRTD4® SENT is a flexible tuning solution when compared to traditional ECU Remapping allowing owners to adjust power and torque output via 7 operating modes ranging from maximum economy to maximum power delivery, ideal for switching between everyday driving and long-haul trips. On top of this the ability to be reprogrammed for over 99% of modern turbo diesel and petrol vehicles, unlike a remap, also represents great value with the cost of a reprogram starting at nearly a ¼ of the cost of a brand new product.
The UK’s leading tuning box just got better! Now with Bluetooth capabilities the CRTD4 tuning box brings the benefits of tuning to your fingertips.
Now you can control the performance of your engine from the comfort of your driver’s seat with the TDI Tuning App. Connect to your tuning box and enjoy total control, transforming your driving experience.
Turn the tuning box on/off using the TDI-Tuning Mobile app. With a touch of a button you can turn your TDI-Tuning Box on, harnessing the full power capabilities of your engine. Or, you can turn it off, reverting the vehicle to stock.
With the TDI-Tuning App adjusting the power output is easy. Simply connect your phone to the TDI-Tuning Box and toggle between the 7 power modes at your disposal. Mode 1 offers the least amount of power, and, is commonly used for fuel saving reasons. Mode 7 is the biggest power increase you have on offer, use it for maximum power!
The TDI-Tuning Box comes built in with a 30 second warm up timer. This means the map file will not begin to run until 30 seconds after your engine is turned on. This is to protect your engine, primarily for cold engine starts. If you would like to increase, or decrease this map timer, you can adjust it using the TDI-Tuning App.
Activate ‘Discreet Mode’ on the mobile app to turn off the LED lights on the TDI-Tuning Box. All lights will be turned off, putting the tuning box into ‘Discreet Mode’. You can use this mode if you are trying to conceal the tuning box from casual inspection in the engine bay.
Connect with other tuners throughout the world on our social networks. Contact our team directly through the app using one of our social media or web chat channels.
TDI Tuning digital tuning boxes come pre-programmed for your engine - you just plug it in, secure it with the supplied cable ties and drive off to enjoy an immediate and significant increase in performance.
Tuning boxes come complete with fitting instructions, TDI Tuning also have step-by-step fitting videos available for many of our most popular vehicles.
If you need an expert to help you with your fitting then a TDI Tuning engineer is only a phone call away.
Connect with
your vehicle
Connect & control from your phone
Turn the tuning box on/off using the TDI-Tuning Mobile app. With a touch of a button you can turn your TDI-Tuning Box on, harnessing the full power capabilities of your engine. Or, you can turn it off, reverting the vehicle to stock.
With the TDI-Tuning App adjusting the power output is easy. Simply connect your phone to the TDI-Tuning Box and toggle between the 7 power modes at your disposal. Mode 1 offers the least amount of power, and, is commonly used for fuel saving reasons. Mode 7 is the biggest power increase you have on offer, use it for maximum power!
The TDI-Tuning Box comes built in with a 30 second warm up timer. This means the map file will not begin to run until 30 seconds after your engine is turned on. This is to protect your engine, primarily for cold engine starts. If you would like to increase, or decrease this map timer, you can adjust it using the TDI-Tuning App.
Activate ‘Discreet Mode’ on the mobile app to turn off the LED lights on the TDI-Tuning Box. All lights will be turned off, putting the tuning box into ‘Discreet Mode’. You can use this mode if you are trying to conceal the tuning box from casual inspection in the engine bay.
Connect with other tuners throughout the world on our social networks. Contact our team directly through the app using one of our social media or web chat channels.
Extend your coverage from 5 to 7 years
Our tuning boxes come with an industry-leading 5 year warranty as standard. Add the Extended Warranty to increase your coverage to 7 years total.
Extends your warranty coverage from 5 years to 7 years from the date of purchase, giving you an additional 2 years of peace of mind.
Full coverage for your tuning system hardware and software, including parts and labour necessary to repair or replace the tuning system.
Continued access to our expert technical support team throughout the extended warranty period.
Receive an official Extended Warranty Certificate detailing your coverage period and terms.