HEY GUYS I KNOW THIS HAS PROBABLY ALREADY BEEN DISCUSSED BUT I CANT FIND THE TOPIC ANYWHERE AND NEED HELP!...IM PLANING ON BUYING A NEW EXHAUST SYSTEM FOR MY O1 BUT DONT KNOW IF I SHOULD GO SINGLE OR KEEP DUAL?...I WANT ACTUAL GAINS RATHER THAN LOOKS!...PLEASE HELP

 

<cue maddox caps lock picture>

singles make power and are lighter

 

yup, single is lighter, better flowing, and most of the time louder. But dual looks better IMO.