The Polestar program upgrade is now available through Volvo for the V70 2.5T. However, from what I can tell its performance numbers aren't as good as IPD's upgrade and it's more expensive. On the other hand, it is blessed by Volvo and you wouldn't have to worry about re-flashing your chip back to factory settings every time you take your car to the dealership. Any thoughts on the pros and cons of each? Anybody could provide real comparisons?