[Onimike]

Hey guys, just need a little help as I've been looking everywhere and I'm a little confused. So I had recently purchased a GReddy Revolution RS catback exhaust system from 86speed (coming in soon) I'm going for a deeper sound as that's what I'm attracted to when it comes to exhaust noise. I had gone to my local parts retailer (shoutout JDM Mafia if you're in SoCal) to purchase some parts, and I've also purchased a Megan Racing Midpipe. I was unaware that a catback system came with a midpipe as I'm new to all of this. Should I sell/ refund the mid-pipe ? or is there a difference? or what else is needed to get that deep sound that I'm looking for? Any help / advice would be greatly appreciated!