Second muffler?

gmoney765

I was just curious to see the exhaust system on a qx80. I noticed there was a big muffler in the middle and another small muffler right before the tailpipe. Does this make it any quieter? Or does it have to do with emissions somehow? The car is quiet and I was just wondering if there was a easy way to hear that 5.6 V8!

Mr_Shiftright

Yeah, that's probably a resonator, which further reduces exhaust noise by producing countering sound waves. It's possible that removal of the resonator might affect fuel mileage a bit, or may cause some vibration. Experimenting in the only way to know for usre.