Originally Posted by BADS335
It sometimes helps eliminate false knock from mechanical vibrations and other affects.
see your point, but since this is not a known issue with this car I still think there is something else going on.
Logical next step in the coils
SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555
SOLD '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2, Mfactory LSD