hey peeps sorry if its been asked b4 , but im looking to get a moderate tune done and was wondering if I should keep my stock exhaust on my xr6t bf ute with the centre muffler cut out and a hi flow cat or get a cat back exhaust like xforces ? Is there any point for my aim of about 270 rwkw.? Is there going to be a better sound from the catback? When I get the tune done I'll have injectors, f6 cai to go with the exhaust Thx in advice guys