The Gti6 rack is from a '97 P2 and the HDI is an '01 P3. Also I'm not sure if the HDI has variable power steering or not. According to servicebox the HDI has a 4000 CL and the Gti6 has a 4000 V7.
Thanks in advance.
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dan86

i wanted to say somthing but was starting to get confused myself! So its the rack that makes it feel different/heavier on the 6. Thought it may be the pump with a pressure limiter or somthing of the sort.