Measuring accurate acceleration on E55 w211
last night I had a friend time 0-100kph on my 03 e55 V8 Kompressor and got not so bad results. 4.9s. considering that i'm waiting for the IC pump and the air filters to arrive, i think its not that bad for a 11 yo car.
anyway, it was done via a stop watch, and given the time, it cant be too accurate(especially when every tenth of a second counts).
Can someone advise me any device to hook up to the car computer and give me a real reading of my acceleration...
thanks in advance




