does anybody know if the K04-25 will fit an audi A4 with no problems? I know the K04-15 is a direct bolt on, its just that the K04-25 has bigger inlet/outlets.

Isnt the compressor housing the same on the k04 as the k03

BTW a K04-25 comes off the 225 hp TT

 

do you mean is the shape of the housing different? I know the housing is larger but the shape is suposed to be the same. the TT uses a K04 with a longer output thing and it might be oriented at a different angle

 

HaHa I can answer that question as soon as I find out if the turbo is ok off this TT does the K04-25 make more power than the K04-15 ?

 

I thought it is the k04-23 for the 225 TT. I know the k04-23 will fit, but i have heard it is almost impossible to tune correctly.

 

no the 23 is for the s4 the 25 is for the 225 tt

and the 25 does make more power than the 15