Got evoms already.
right, well in that case you are already at 1+ so to go to 1 3/4 you just need a pipewerx/bcs downpipe mated to your oem catback but if you going to pu the downpipe on you may as well pay the £60.00 for the Revo 2 map then see how you like it after 5,000 miles.
if you do then you can add intercooler (THS), hpfp (loba), rs4 fprv, full tbe (depends what part of country you are in as you might not want to drive to have bcs/pipewerx fitted so milltek would probably get your hard earned?)