KTR cat back and maybe sports cat ???

Hi, I've been looking at getting a cat back for the clio and am really debating wether to get the sports cat as well but unsure whether id have to remap as well if i get the sports cat because of a flat spot... would prefer not to map is due to limited funds and sports cat is only going on if i don't have to map it. any ideas guys and girls ?
 
You don't have to map it, can just have the exhaust and cat then map it later on if want, I got Ktec zorst then added the map goes in wed for Ktec ik to be fitted on