You don't have to do the pre-cat delete for stage one.
Thing with the GTI exhaust is that it's one section from the turbo back to the main cat, so if you get an after market down pipe, you will have to go for a main cat decat or sports cat (expensive), or have it welded to the standard system after its been cut up... Hmm
If you want the precat deleted and don't want to do your own, I'd look in the for sale section for people selling a standard exhaust system and smash it out then get it fitted... Exhaust shouldn't cost much more than 50 quid.
As said you don't necessarily need it for stage 1, afaik rtech are not a mobile tuner, they are a proper tuner with rolling road etc.
