borrowed from ffoc

been told that the trouble with extracting big power from the new ST is that the motor uses inferior conrods to those fitted in the topline Volvos (are the cars called t5Rs or something?).

Allegedly (I'm only repeating this parrot fashion) but if anyone is thinking of going beyond a chip & an exhaust upgrade for a new ST then you're into the realms of having to fully strip the engine to replace the conrods. If this is true you certainly don't want to be just bolting a bigger turbo onto it!!!