Diesel tuning boxes.
Discussion
I have an XF-S and was considering the same thing until I read quite a few horror stories about both the tuning boxes and so-called professional remaps. The tuning boxes apparently just trick the ECU into ramping-up fuel rail pressure and have been known to destroy injectors and, much more worryingly, actually cut into the piston crown! Even with remaps, there are lots of potential issues, among them increased smoke output which can cause DPF issues. Consequently, I quickly decided it wasn't worth the risk.
If it's a few quid of eBay, quite small and only 2 wires walk away
They only fool the car in thinking it's still cold and the cars ECU adds fuel
If you've got closed loop lambda then the ECU could adjust and reduce any power benefit the box added
These add on boxes age usually just snake oil and only reduce your wallet of a few quid, worst case scenario is an engine problem down the line
They only fool the car in thinking it's still cold and the cars ECU adds fuel
If you've got closed loop lambda then the ECU could adjust and reduce any power benefit the box added
These add on boxes age usually just snake oil and only reduce your wallet of a few quid, worst case scenario is an engine problem down the line
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