Thanks for the reply guys.

Ah, my bad. I knew the AJL and AEB's power output.

Jmac, the AJL has slightly bigger port than the AEB? That's a good start
I've rebuilt my own K03 but part number doesn't say it's the K03S as most people had thought so. Here's mine:-


This is the turbo kit i am saving up for btw:-



I became power addicted after a ride in my bro in law's stage 3+ A4 B6 1.8TQ. My car feels soo slow

As said, my biggest headache is software/tune. My ECU code is 558 DA and none of the VAG has come back to me for a solution. I've been suggested to use a unichip but I would still have a problem of not being able to run a bigger MAF which I think the unichip would not solve.

Someone proposed to me to buy off ECUs from US with codes that ends with 558N or 558T as they may plug in to my harness but I was told I need to get it recoded by Audi or something to be able to use it?

Cheers