So the best way to gain a few HP should be to remove the cat and the central noise reductor by replacinf them by a tub until the mufflers.
I doubt a chip can give any gain on the Clio 182, because the stock one is very well programmed by Renault Sport Technologies.
Or you can replace your parts by N-Group rally parts, if ever someone already have that kind of parts for the 182.
The F4R is well optimised in the 182hp specification, on the next step of developpement, an expected 200hp version in the next Clio generation, Renault will have to modify several internal parts of the engine.