The Clio 197 boasts 197ps not bhp and that's very loosely based on Renaultsport figures, a 197 is typically 180-190bhp, big gains are very hard to come by without big money, a remap will certainly help with driveability but don't expect anything significant despite what some companies claim. I haven't dealt with ktec after watching how aggressively they have dealt with other companies but you won't go wrong with RS Tuning or TDF