@
Mc4by
For your consideration. My eng CRD, I have done progressive eng mods over time - NADS, cooler, intake induction, remaps, high flow turbo (run max B 26psi (rear wheels 136kW/512N-m) have ended up with a good result but fair few $$ spent to get there and lessons learnt. ECO from home (@600m) up to the snowy mtns (1300m), total 450kms: stock 14.5l/100kms and now easy 12 l/100kms - veh 3.5T
Chip / Remap / or leave as is, up to you. What you have done to date is good.
Irrespective of what you do longer term, IMO, these ZD30 engines do need to breath well, suggest you look at doing an upgrade to your air intake (induction) first and this may satisfy your need. As stock, the induction is too restrictive and would be even more so if you go with Chip or remap and run at higher boost. This alone will provide improved performance pwr/torque/EGTs. Too much restriction before turbo causes a vacuum and the turbo works harder to overcome this. Solution depends on what you are prepared to spend and it helps if you able to do the work. Possible Option: Use current snorkel with an upgraded airbox and 3" pipe from airbox to turbo with 2.5" flange elbow to turbo compressor housing(easy bolt on).