A little crappy 100% unscientific 0-100kmh comparison between my stock 220i's acceleration and after ECU tuning. I don't have access to a dyno or proper timing equipment so this will have to do
Both runs done in the same weather conditions and with the same shitty launch skills from me, but for some reason I did the tuned version in Sport+ mode. BMW puts the stock 220i's 0-100kmh at 7.0s and I did it (VERY roughly) in 8.13s, with the tuned one at 6.27s, so make what you will of that. I'll try to do a version using launch control as well to see where that gets me.