Hi all!

I'm living in Hungary, own a 2016 Fiesta VAN MK7.5 1.5 TDCI 75PS, converted to look like ST/ST-Line replica mix. Stock engine, -intercooler (but with less % covered by bumper, in stock form 65% was covered of 150x300mm front face surface, now less than 50% covered), -exhaust (with DPF in place), -injectors, MHI TD02L turbo, EDC17*** ECU.
Currently with a remap: 2560mBar max MAP, 1596 Bar (Lowered from 1640 Bar because tuner thought the issues I had were related to this, but turned out to be a boost leak) rail pressure. 110HP and 223Nm on dyno.

Looking to learn more about tuning it, would like to fix some annoying issues (throttle map is really bad, car pulls too hard even at very low throttle input, unable to drive it properly in town, or change the rail pressure back to where it was before tuner lowered it, eliminate boost decrease at ~2600RPM in WOT caused by some map) the tuner made while remapping it. Also would tweak the other cars in the family (2.4 D5 Volvo V70 2007 and 1.6 90HDI Citroen C3).