I recenlty upgraded from whatever it was that my car had (presumably 80E or something similar as it's an '08 and had never been updated) to 240E - it was a bit of a pain, as I then had to reload an updated tune as well . . .
Certainly not a game changer - if there is any differences, it's that the engine feels smoother between the gears. Nothing empircal to add here; the observation may be 100% psychosomatic.
SSII | Speed cloth | Tint | LCI | 6MT | EDC | MS Stage 2 Intake | 240E + ESS Tune | MS Pulley | OEM GTS Wheels + Michelin Pilot S | MS Spacers | Akrapovic EVO (!) [+CF tips]