So I just recently traded in my '01 S60 T5 for an '04 S60R and needless to say I am PSYCHED!!! I do however have a question/slight concern about my new jewel. It seems that under hard acceleration, primarily in 2nd and 3rd gear it seems, you can absolutely feel when the turbo kicks in. However, once you get into the 3500 to 4500 RPM range, the car feels really jerky. Like the turbo keeps kicking in and out. Is this sort of a normal thing, or should I get this checked out? I didn't really notice when I test drove it.<p>Thanks in advance for any wisdom anyone can share.