Hi over the last 2 months I have had some jobs done to my 1998 VR6.New oil and filter full set of plugs and leads,fuel filters and I replaced the fuel pump with a second hand genuine vw item.Car was fine but the last few days its developed a judder in the low rev range its always between 10 and 20 thousand revs once she goes over 20,000 its fine.If i floor it thats when it seems to do it most but if im gentle on the pedel its not to bad just wondered if any of you guys had any suggestions I was thinking maybe the fuel pump which isnt noisey like my old one or maybe coil pack any suggestions or advice would be great thank you..