Advice on upgrades plz

[Baillie]

I have bought a w reg s3.
The previous owner has modified it. He lowered it, remapped it(250bhp) and changed the DV and air filter(kn cone filter)
The worrying thing is the turbo inlet pipe is standard and wobbles about and I think the brake disks are warped. Is this an expensive job to upgrade them.
My friend had his car modified at amd and said for me to take it there.

 

[Vex182]

Turbo inlet at the back of the engine bay (red pipe) is prone to splitting and Forge do a better replacement for it. As for discs, any good 312 discs will work fine, don't get anything to special. Spend your money on decent pads to improve the brakes.