Quote:
Originally Posted by Billy_BMW
The S55 has a ‘soft-blow’ anti-lag system by default. It works in Sport and Sport Plus, and it’s the whip/crack and ‘braaap’ noise caused by intermittent high throttle loads.
See:
https://f80.bimmerpost.com/forums/sh...d.php?t=930175
For sound regulations, OPF-equipped S55 models have had this feature removed by the ECU tuning. But from what I’ve seen, the MHD tunes are using this software feature, whereas, BM3 doesn’t have it by default for their S55 OPF maps. Hence why I asked if he’s OPF/Euro based as I’m keen to get the same acoustics in my S55 M2C. |
I have M2C with OPF and I don't have this brap sound, maybe it is too quiet, I tested it in different modes/combinations of engine/dct - still no brap on throttle lift.
Any idea how to make it louder?