I believe I have mostly done what your asking about to my '17 Explorer Sport.From stock down pipes, exhaust goes into a 2.5" magnaflow X-pipe, then out into two straight 2.5" pipes back into twin Magnaflow hiflow mufflers (this section is Magnaflow's 2.5 explorer's setup.)Sounds ok but dont expect a v8 sound. It's not loud but people will recognize you have an exhaust immediately. You can hear the turbo's spooling out the exhaust which is cool.Sent from my SM-G960U using Tapatalk