I have an ARK exhaust with BERK HFC and love the sound but hate the rasp that the cats give off. If I switch back to stock cats and tune my car, about how much power will I be losing? I want to try GTM RTP or ART but I think that option 1 will be more raspy and option 2 does not fit AWD.. HELP!! Idk what to do

thanks

 

anyone? Dont mean to double post but I want to sort this out by tomorrow so I know what cats I will be getting tuned with (bringing it to tuner on Thursday) unless I go with something new