The (AAZ) k14 is hands down the best turbo for either a 1.6 or 1.9 for daily driving or slightly modded engines.We swaped out the k03 on my dads passat for a t3 and it worked ok but since we put the k14 there is no turning back.
My dads 95 passat wagon 1.9TD has a G60 intercooler and no cat.I turned up the pump and put a 1.6 boost pin inside.I just reciently went to ottawa in this car with a U-haul trailer and furniture.This turbo is set to 18 psi max and most of the way there and back it was at 13-18 psi with EGT's at 1200 deg pre turbo.
If this turbo is used in a modded application I consider it a MUST to have an intercooler,boost and pyro gage.
My dads engine I figure must be making 115-125 hp and has gobs of torque with very little smoke thanks to the k14.