Hi, I bought my 2004 d22 second hand and it came with a dtronic chip. For some reason the engine malfunction light comes on now and again and the car just stops in the middle of the road. The blokes at Rankin' diesel took it off for us and now the car runs fine. Has anyone had any problems like this? Does it need to be tuned or something? I do want to put it back on cos it does do better with fuel and a bit more power.