Pretty much the same as any other conversion, physically it drops straight in.

Earlier Golf 4's will be problematic as the Golf 5 only accepts road speed and RPM via CAN, but If it's a late Golf 4 and already a diesel it'll get the road speed signal and provide RPM via CAN which makes things a lot simpler.

You'll need to get the EDC 16 ECU de-coded, or hide a set of clusters somewhere, then all you're left with is the wiring []

There's not a lot between the 1.9 and 2.0 PD's, so it's a lot of hassle for not a lot of reward. If you want to be different go for one of the new commonrail engines!

 

or shud i just get a 150pd engine from the mk4, because i dont no which one is better?

 

I'd go for a PD130, it's not got the issues of the 150 and still maps well.

 

or get a 2.5 tdi frm a vw transporter [au]

 

[Y]

 

im not entirely sure the 2.5 would fit but the thought of it is just fantastic