Bobby
Something else for you to consider;-
A straight remap on a stock car is £550 and gets 265bhp (maybe change the dump valve so add £85)
To get to 280bhp using m1tchy calc's above you need to spend ( full exhaust system (£750-£1000) a FMIC (£800) Closed Air Induction kit (£200). A turbo intake pipe (£120) and a custom remap (£500-650) along with a RC dumpvalve (£100)....So from standard you'll need to spend approx £2500 on it to take it upto around 280bhp.
So that's over £1,800 for an extra 15bhp approx
In my experience 15bhp on the road makes very little difference and spending £1,200 on good suspension made up for the lack of 15bhp.
Thats exactly what my thoughts are. Its crazy to spend so much on 15BHP. I would want 100BHP for that amount of money.
If you want 300BHP+ then dont get an LCR. There are other cars out there that are far easyer to tune