it of a anarea that on the US Sites they would swear that turbo's is the only way to go....
however in the last 5-7 years supercharger technology has come a long way,mainly thanks to manufactureres like Mercedes,Jaguar,who now regulary put superchargers on there cars
now the choice you have at the moment is either the TTE(TDI) supercharger or the turbo build up,my choice,
supercharger
why
well not being biased but its a proven application on this engine,it in its stage 1(only stage at the moment) will not damage the engine,and comes with a recognised warrenty(from TTE),you would have to ask morph about the TDI warrenty
hope this helps
are you in the UK,if so TDI is your option if not i went to TTE in Koln,..........
so if you are in the uk coming to the meet......:D