Hang on, 25 bhp out of a 1.2.............thats not going to get you going much quicker anyway!
De-cat etc etc nice sounds and a bit more go. But only a bit, just save ya money and get something quicker.
My 172 now seems like it could do with more power, belive me the amount of money you will spend to get to 60 in 8 secs will be crazy!