Which Hdi Turbo

[Fozzy]

I will soon be replacing my turbo as its kicking out blue smoke when left to idle. I haven't looked to see what turbo i currently have.

From my understanding it will either be a Ko3 or gt15.

Car is an X reg 2000 DturboHDi

Can i buy either turbo or should i replace like for like?

If it doesn't need to be like for like what would the better choice be?

Running standard map currently, i have though about going stage one but its a daily driver and MPG is important.

I will be removing the engine so i can change the manifold if need be.

Any help appreciated. Thanks

John