Hi thx for answering Yee i think this is cbab but i be thinking to swap turbo from cbbb 170hp modelThis page should help you out
VAG group 2.0 TDI Tuning (140, 170 BHP) engine Mod Guide
A guide to the various engines codes, common faults and issues on the VAG group 2.0 TDI engines with tuning tips. We include the PD and newer CR engines in this guide.www.torquecars.com
Do you know your engine code?