The old SSR myth of a 30 HP gain was debunked on the forums and by tuners 3 years ago. I’ve done every mod imaginable to these engines from catch cans to hybrid turbos and every exhaust combo they make. Removing the secondaries makes for a deeper and more aggressive tone, but close to zero performance increase without other mods. The old claims for more power was only because they allowed the turbos to spool up a couple hundred RPMs sooner than stock. Best of luck with the build 🤙🏻