I was looking into buying the trip computer for my S40. I picked up the car 2-3 months ago. I got a pretty good deal on it.. (05, 21k miles, 5 speed) but the car is...should i say, basically equipped. I found the trip computer on mysweedishparts.com. Is it even worth it? I think it would be nice to have, considering I dont. How accurate is it? Avg speed/mpg/etc.. Do the ppl on here that have it even use it? Its not a terrible amount of money, i know, but I'm sure it will add up after a stop at the dealership for software download/labor, etc.. Im pretty mechanically inclined. Im not worried about the install of the new turn signal arm. Advice? input? Thanks in advance!