I have a 2006 Sonata 2.0 CRTD which is very slow from a standing start. Once the turbo 'kicks-in' is is fine and when travelling at speed the acceleration is great. I have tried various fuel filter and exhaust cleaners added to the fuel tank, without success? When about a year old, Hyundai did an update to the electronics which helped, however, lately it has got much worse? I now avoid doing right hand turns because of the slow start, even when the engine is hot! Can anyone help? Colin.