I have to ask. Is it worth getting any kind of a remap on the 325i? The engine is indeed the straight 6, 2.5 litre lump. I've seen those that say yes, there are gains to be made in the BHP/torque department and those that say don't bother - gains are minimal - sell up and get a 330.
P.S I'm quite happy with the performance, even though it's no rocket ship.