forgive me ... but ... I very much dought you will see 204bhp from a stage 1 remap on a 116dECO tune per chance?
I've just been in to see the guys myself if it was, just bought a 2010 116D with 115 bhp, been told to expect around 204 bhp with just a remap, will be getting it done next month once I've had a chance to change box and diff oil.
I see no reason why your trans clutch won't be ok, obviously depends on the way you drive it.
Dump the clutch at 4000 rpm and drive it like it's stolen ... Mucho problems expected, for me I just want more power and don't intend to shock load the transmission with drag starts so I don't envisage problems, having a significant increase in torque would naturally show up clutch wear more quickly .... Worth a possible earlier clutch change for the added grin factor IMHO
If I get mine done before you I'll let you know and you can come for a run, I work in Glasgow .