On my 2014 4/4 sport I had a remap by Cain,a Librands manifold and sports exhaust and K+N filter with forced air induction.
The results from memory were a rise in bhp from 110 bhp to 140 bhp with a big uplift in torque and 5th gear became more than just an overdrive gear.
Felt like a different car with same 40+ mpg..win win !!!