Hallo,
der Motoreinbau verlangt aktuell Famepoints, auch wenn das FameReq deaktiviert ist.
Workaround:
{
"tradeable-code": "ServiceBP_Purchase_BP_WW_Engine_ICU",
"base-purchase-price": "5000",
"base-sell-price": "1042",
"delta-price": "-1.0",
"can-be-purchased": "default",
"required-famepoints": "0"
},
{
"tradeable-code": "ServiceBP_Repair_BP_WW_Engine_ICU",
"base-purchase-price": "2500",
"base-sell-price": "521",
"delta-price": "-1.0",
"can-be-purchased": "default",
"required-famepoints": "0"
},
{
"tradeable-code": "ServiceBP_Install_BP_WW_Engine_ICU",
"base-purchase-price": "1000",
"base-sell-price": "208",
"delta-price": "-1.0",
"can-be-purchased": "default",
"required-famepoints": "0"
},
Einfach die Standarddaten der Fahrzeuge und Services in der EcoOverride bei jedem FZ Händler ersetzen und eine 0 reinschreiben. 
Grüße
phil