Well, the ZZP cat isn't very efficient, but you would think with another cat that it would be lower than that. Probably because my tune sucks, lol. I have the resonator where the bolt-in cat goes. I could put another one behind it. The front part bolts to the 2-bolt flange on the downpipe and the rear uses a v-band.
Got the resonator back from the tig’r yesterday and put the system back together tonight. It sounds awesome actually. Better than I was expecting. The drone is gone no cold startup rasp. It’s relatively quiet at idle. Has a low rumble under light load. And really growls when younger into the throttle. Best thing is the rumble in the cabin is gone.
Street sweepers are mostly done now so I took it for a long rip tonight. First time out!