can the dreaded garret vnt be upgraded to bigger or better turbo? on a 110tdi engine, what about pd 130 unit?
yes, case of how deep your pockets are! 110 is a vnt15, 130 pd run a vnt17, I'm running a vnt17B (thicker shaft/ subtaibale higher boost, good for 2400 mBar abs.) on my mk1 (110 based engine) then one of the next upgrades which i'll do this year if the pennies are ok is a hybrib vnt 20 or 22 compressor wheel boost will still be controlled by the ECU, cheap ways around that - or a remap. Stock pressure controlled by ECU is 1950Mbar, plenty for vnt15. replacing the MAP sensor for a different tolerance item fools it to run 2100mbar'ish
yes it is 1.950 bar , so when building mk1 and having turbo pipes blow off is an issue 's 1.8T's raving about 1 bar upgrade! sorry left off orig post, 17b on 150 pd's only stumbling block is type of connector from outlet on compressor side differs as do pipes, rest straight swap
