I'm not 100% positive, but at 22 seconds in it looks like those aren't the OEM cats. My best guess is that you have three breather mods (intake/hfc/exhaust) and need a ecutek/uprev tune.
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2016 7AT GM Base: Fast Intentions CBE 18" Res, Z1 Rear Diff Cover, Quaife LSD, Nismo S-Sport Suspension, Nismo Body Brace Kit, White Line Front Sway Bar, SPL Front End Links, Energy Rear Bushing, Z1 Post MAF Silicone Tubes w/ K&N Drop-in Filters
Last edited by Raidernation; 07-28-2017 at 05:37 PM.
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