Deep exhaust/ ZERO hiss

NextLevel

When upgrading the OEM cats, VQ is notorious for its deceleration "hiss", no way of getting around it.

Overall loudness will depend on your manifold/cats/resonator/muffler selections.

Now for quality exhaust systems,....

-Fast Intentions is manufactured in house (HAND BUILT INDIVIDUALLY) right in Simi Valley, CA. All build from stainless, mantrel bent and tig welded.
-Motordyne now is manufactured by a 3rd party, no longer in house. The owners are focused on other job opportunities at this point. They've had non-stop quality and order issues this past 6+ months.
-ARK Performance, great sounding system, manufactured in Taiwan.
-Powerhouse Amuse manufactured in Japan, 100% hand built and 100% titanium. Put it this way... you pay for what you get...
-GT HAUS aka Meistershaft is 100% oem orientation, just upgraded tubing and resonator/muffler deletes. Its loud af.....
-ARMYTRIX is a quality setup with optional dual valve options to control sound on the go. Spendy, Loud, nice exotic sound.

Let us know if you have any questions regarding any exhaust part/setup/combination for the z, happy to assist