Hey guys, I want to know if I will lose power putting a 3” catback exhaust on my stock SV6. For those wondering, the brand of the 3” catback is Empire Performance. Advise that I am not going to do a tune after putting on the exhaust. I know slapping on an exhaust without a tune on my SV6 will not bring about much power if not any at all. However, I want to know if it will actually decrease power instead. Cheers.