Quote:
Originally Posted by Bullitt
You're one of the lucky ones. It depends on your software version. Several members here (e90post) with LSD have reported non-intrusive e-diff activity, and they're often the ones who have avoided software updates from the dealership.
Traction control always fully disengaged. I can hear and feel the brake pulses by the e-diff when throttle is added during extreme slip angles and slides. It manifests as a rough vibration through the chassis and is quite loud at times.
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I had exactly the same experience. I have a mechanical LSD installed in my 2011 128i (Canadian) and without any recoding, did an autocross and with DSC fully disabled by the 3 second push, you can absolutely feel the brakes / ediff fighting aggressively. I would characterize mine exactly as the same as yours - "rough vibration / quite loud". I am going to attempt the recoding today to remove DIFF_LOCK, FLR, FBS, and BB_RAB and will attempt another event to see if there is any improvement.
Mark
Edit - had the coding done this afternoon. Here is the complete before trace and the pertinent modules I changed. Looking forward to trying out an autocross to see if this improves the issues I had above.
Code:
Codes changed in DSC module: (these are the "after" values)
C0F_DIFF_LOCK
wert_00
wert_01
C0F_FBS
wert_00
C0F_FLR
wert_00
wert_02
C0F_BB_RAB
wert_00
Code:
Stock TRC file for 2011 BMW 128i (Canadian edition, 07/10 build date) DSC module:
SZL
wert_02
C0X_C8
wert_02
C0F_AFH_HSA
wert_01
C0F_AFS
wert_00
C0F_ASC_AMR_STB
wert_03
C0F_ASC_BMR_STB
wert_02
C0F_ASL
wert_00
C0F_BAUART
wert_02
C0F_BB_RAB
wert_01
C0F_BBV
wert_00
C0F_BBV_KORR_HA
wert_00
wert_03
C0F_BBV_KORR_VA
wert_04
C0F_BERGAB_GERASTET
wert_00
wert_01
C0F_BERGAB_KENNEN
wert_00
wert_01
C0F_BERGABANSATZ
wert_00
C0F_BTM
wert_00
C0F_CBC
wert_00
C0F_CF_ESM_HB
wert_00
wert_01
C0F_CF_ESM_LB
wert_00
wert_01
C0F_CR_ESM_HB
wert_00
wert_01
C0F_CR_ESM_LB
wert_00
wert_01
C0F_DBC_MIN_AUSLOESEDRUCK
wert_00
C0F_DCC_C_AAT
wert_00
C0F_DCC_C_ATT_SCHUB_AUS
wert_00
C0F_DCC_C_ATT_SCHUB_EIN
wert_00
C0F_DCC_DTC
wert_00
C0F_DELTA_PSI_BETA_LIMIT
wert_01
C0F_DF_DIR
wert_02
C0F_DIFF_LOCK
wert_02
C0F_DRUCKMODELL_HA
wert_02
C0F_DRUCKMODELL_VA
wert_02
C0F_ECBA_DCC
wert_00
C0F_FBS
wert_01
C0F_FLR
wert_01
C0F_GETRIEBE
wert_00
C0F_GMB
wert_00
C0F_GMK_ECBA_HA
wert_01
C0F_GMK_ECBA_VA
wert_03
C0F_GMR_MAX_LIMIT_SCHRAEG
wert_00
C0F_GMR_MIN_LIMIT_SCHRAEG
wert_00
C0F_HSA
wert_02
C0F_HSA_AFH_AFU
wert_00
C0F_IPM_MAX_P_RES
wert_00
C0F_KUEHLSCHACHT
wert_02
C0F_LCL
wert_00
C0F_LENKWINKELKENNLINIE
wert_03
C0F_LF_ESM
wert_00
wert_01
C0F_LR_ESM
wert_00
wert_01
C0F_LUEFTER
wert_00
C0F_LWK_X2
wert_00
wert_01
C0F_LWK_X3
wert_00
wert_01
C0F_LWK_X4
wert_00
wert_01
C0F_LWK_Y1
wert_00
wert_01
C0F_LWK_Y2
wert_00
wert_01
C0F_LWK_Y3
wert_00
wert_01
C0F_LWK_Y4
wert_00
wert_01
C0F_M_ESM
wert_00
wert_01
C0F_MIN_DRUCKAUFBAU_GRAD
wert_00
C0F_MOTOR
wert_05
C0F_MOTOR_LEISTUNG_MAX
wert_00
wert_18
C0F_MOTOR_SCHLEPP_P
wert_00
wert_01
C0F_PRE_MSR
wert_00
C0F_PRE_USC
wert_00
C0F_RPA
wert_00
C0F_RPA_SCHWELLE
wert_01
C0F_SC_X_ESM
wert_00
wert_01
C0F_SC_Y_ESM
wert_00
wert_01
C0F_SCHUBABSCHALTUNG
wert_00
C0F_SDR_CTC
wert_00
C0F_SETZ_V_MAX
wert_00
C0F_SPURWEITE
wert_00
wert_01
C0F_SST
wert_00
C0F_TB_BDD
wert_01
C0F_THETA_ESM
wert_00
wert_01
C0F_UEBERSTEUERN_MUE_0
wert_03
C0F_UEBERSTEUERN_MUE_1_2
wert_03
C0F_UNTERSTEUERN_MUE_0
wert_00
C0F_UNTERSTEUERN_MUE_1_2
wert_00
C0F_UNTERSTEUERSCHWELLE
wert_00
wert_02
C0F_V_EINHEIT
wert_00
C0F_VERZOEG_NEG_FEIN
wert_00
C0F_VERZOEG_NEG_GROB
wert_00
C0F_VERZOEG_POS_FEIN
wert_00
C0F_VERZOEG_POS_GROB
wert_00