Hello, I have just had my 2006 Citroen C5 VTX+ 1.6hdi 9HZ remapped to remove the EGR Valve and an economy tune and the car now runs and drives alot smoother. All fault codes have cleared bar 1 under ABS and that is (perminent fault engine torque regulation). This faault did not appear before the remap. Is it a problem within the map files or a hardware error on the car.

Thank You

First of all it would be a good idea to describe your problem in the title :-).

Please also include a DTC code.
We can only help you if you upload your remap, ori file and damos if you got it - so we can check if its the remap.
Simply enough, you can also flash your original file and drive it to see if the remap is the problem. But I guess you did something wrong in your remap.