I bet he means 200bhp not whp as he's in the UK, so call it 175whp.
I have the same car mate.
I've just put the BV43 turbo on off a 2.0 170bhp Audi A4. Its plug and play. Normal cost £200. People on here have got 215bhp with this turbo.
I have a Forge FMIC installed, with custom pipework. Kits available on ebay £150 for cheaper versions. Not required but keeps temps down and standard intercooler has plastic end tanks, which will only take so much boost.
I have Bosio R520 injectors to go on, pop tested to make sure they're opening at the right pressure. £350. You can go for 0.216 nozzles but not the cheap ones on ebay, so it's always gonna be £250+ to buy them and have them set up properly.
I have a fully ported cylinder head (not required for our power really but fancied taking the top end off anyway to check the bottom end and i liked the idea of a better flowing head) £400
I'll need a dual mass flywheel upgrade to take the torque, as well as friction disc change. Anything over 170bhp (350Nm) and you'll ruin your current clutch. £500
I'm sticking with 10mm fuel pump but installing a lift pump in the fuel tank off the B5.5 PD130 soon, to help the main pump at the top end. £100
You'll need a 3 bar MAP sensor to control 1.6 bar boost. £30
I've deleted the EGR and put a PD130 inlet manifold only. £75
You might consider uprated head bolts, for £45 you get the PD150 ARL Golf head studs which are 20% better tensile strength - but need shortening to fit our heads.
Also a decat pipe helps, not essential, but THS do a nice one for £140.
I got my turbo for just £100, and its a beauty.
When you factor in changing all the extras like changing to a new head gasket £35, new oil feed pipe to the turbo (worth doing) £35, an oil change at the same time £30 etc etc we're talking £2000 to get your 200bhp. You can sell certain bits (like your old turbo) and you can miss out certain options above too, so minimum £1000 to do this.
