I have been very impressed with them, not as good as a real remap, not performance wise but because they increase the fuel pressure on the common rail, where as a remap will increase the amount of fuel from the injectors and increase boost on the turbo (if done properly). Performance wise it is very impressive, I had one on the 120d and the 320d and it has made a massive difference.
If you speak to Mike ask him if they can still honour the £300 forum offer.
