I'm pretty sure its just the Forge Dump valve mate, the guy I bought the car from was an Audi Techi and he fitted it before I bought the car. I'll check with Forge, cos the standard valve in the 1.4 TSI engines is a recirculation like the 1.2 TSI, not a dump valve. Its news to me about the Leon having a 1.2TSI engine, what bhp are they? It looks great on the pic anyway mate.
I'm wanting APR to remap mine but I can't get through to them at the moment, not by e-mail, phone or carrier pigeon lol.