I just flashed my software to 240E and I gained 30HP!
But I really did have Tom at EAS flash my 08 to the new 240E update. I have to say Tom is awesome. He didn't try to sell stuff I didn't need, but instead he was a wealth of information.
He checked my current software version which was 220E which suprised me since I didn't think dealer had updated it in a while. Tom openly admitted that I probably won't feel any substantial gains in power.
All I can say is that I don't feel any more power but I did notice a smoother delivery of power across the band. Normally when im passing someone and step on the gas, my car violently jumps up. Like going from mild to crazy.
Now, its pulls strong all the way through. I like it seems more predictable. If i want the crazy? I just put the pedal to the floor until i hit the overdrive.
Worth it? I think so. Plus its cool to see all the other cars in the parking lot and in the garage bay.