So I’ve been trying to design a new exhaust system in my head and this is what I cam up with
Start:
Pacesetter lt’s
Pacesetter y pipe
Magnaflow high flow 3 inch id cat (because I have to pass inspection every year)
Magnaflow 3 inch muffler
Turndown tail pipe
End

Would running a single 3 inch id cat hurt performance more then the stock 2 cat y pipe?