That would sound about right, mines rr at 173 with just the full janspeed system. I have a bmc fitted now as well but haven't made it back to the rr to see if it's gained/lost power since.sounds like the ptp "180" kit... £1115 if you buy the set, about £1050 if you add it all to the basket seperately unless i did something wrong lol!
from comments ive heard it gives a bit under 180, maybe 175ish? but thats plenty bhp lets be honest! its the torque increases youre after... well thats what im after with mine anyway