You won't get anywhere near 12bhp mate, 5-8 at the best.
Whichever chip/map you choose, you will see gains very similar to those I have on my car which is what was in the link I posted. The 172 and Cup engine is identical so there won't really be any variation.
Unfortunately the F4R engine is very difficult to extract cheap power from. That is not to say a map is not worth it as you will see very good mid range gains in torque which is more important than top end bhp.