I work at a VW dealer and we have 3 of these turbos lying around that I can have for free once they are past warranty period. One has touched the impeller housing on blades so not much use apart from spares, the other 2 were changed purely due to a little noise and were functioning fine.So basically I have 3 to use/abuse.Now the part numbers are 03G 253 014 H and are GT1749VA turbos but they have the manifold and housing all as a single cast piece, has anyone used one of these and did they just cut the housing and weld on a flange?
you either get big boost down low, or big boost up high. and the VNT's dont do a very good job of boosting way up high in my oppinion. almost no lag if you have a good one tho. when my turbo was alot newer, it would spool the second you jumped on the smoke pedal.
I pretty much don't ever rev over 4,500...