Its taken a while but I have managed to source some second hand parts to go stage 2+ on a budget. Picked up a full turbo back, resonated, milltek for a sportback (needs a new lambda probe boss) and a full HPFP pump (OEM pump with KMD internals installed) through the forum classifieds. Getting the exhaust fixed/fitted by the guy doing the restoration/conversion of my splitscreen camper (fitting a 3.2 porsche engine in) and then AMD are then fitting the fuel pump, new cam follower and one of their AMD CAI kits and doing the Revo stage 2 remap / tuning.
Component Hardware Cost Fitting Cost Total Cost Milltek + Gasket £405.90 £50 £455.90 Lambda Boss £3.25 £20 £23.25 Fuel Pump £275 £37 £312 Cam Follower £35 £0 £35 AMD CAI + Heatshield £350 £50 £400 REVO Stage 2+ £0 £120* £120 £1,346.15
* Upgrade from Stage1 to Stage 2+ as the car came with REVO stage 1
Still not cheap, but that is the price of the exhaust alone if buying it new!! Was tempted to save some money by buying a cheaper CAI than the AMD one, but its reasonably priced and as they are so new have not seen any come up second had. Car is an S-Tronic, so (hopefully) can handle the torque - but may go for a gearbox map at some point.
Looking forward to the extra torque, car as a stage 1 feels slow compared to the S4 (3.0 V6 S/C model) even though it is about the same power/weight as the S4, however the supercharged 3l engine picks up so well from a standing start!