hello all, having just bought a very tidy 1996 A4 for the missus with the 90bhp pre PD 1.9 tdi lump in I'm wondering which components I would need to convert it to the 110bhp as standard in the 'red I' pre PD models?
I have a 1999 A6 with the 110 version and it just pulls a lot better, as they're the same basic engine and its only 20bhp difference is there much to change?

Cheers-Steve