Originally Posted by djdav
sorry I don't understand
The urea on the D is to help with the catalyst of unburn hydrocarbons, so most likely that is injected up front close to the engine or cat, also not sure if the urea injection is needed in every market, so they may not have it in France.
2008 E93 335i, MHD, HPF IC, Injen Intake, AR DPs, Alpina TCU Flash
2016 X5 M-sport 35i JB Stage 1
2013 Mercedes C63 AMG, ROW airboxes, power pipe, Eurocharged V6 Flame tune 540 HP