Per;
https://www.injectorplanet.com/products/bosch-0280156061-volkswagen-06a906031baThose injectors should flow 301.8cc at 3 bar.
per flowrate calculator at;
https://raceworks.com.au/calculators/injector-flow-vs-fuel-pressure/those same injectors should flow 348cc/min at 4 bar
now, plug that into one of the several krkte calculators discussed in threads to get new krkte at the higher FP flowrate
https://nefariousmotorsports.com/forum/index.php?topic=21517.msg158463#msg158463or
http://nefariousmotorsports.com/forum/index.php?topic=4021.0TVUB is a measure of the injector opening latency (time) due to variation inf system voltage, it does not change with a change of fuel pressure. Whatever TVUB you had previously (or from bosch data sheet) should be same at any fuel pressure.
TEMIN is one other variable that you might look at if changing fuel pressure or injectors. The effects might not even be noticeable when driving but if you want everything perfect then scale it down too.
KVB is another you might want to re-scale if you want the dash fuel consumption and miles to empty displays completely accurate but it has not effect on engine operation.
