2022 Chevy trailboss exhaust gurgle

[AlexTrailBoss]

I have a 22’ Chevy Silverado trail boss. I took the muffler off and did a resignatoranf flapper valve delete and it’s just straight piped. When I’m on the road and I’m approaching a red light, as it decelerates it makes a gurgle sound from the exhaust only as it slows down under 2,000 RPMS What can it be ? I NEED HELP 

[Byrds8]

The only way I know to fix that is put a muffler back on. From what I have read, "It's caused by the decrease in exhaust gas when you lift off the throttle which creates a slight vacuum in the pipes." When I removed the muffler and flapper from my 21 Sierra, it did the same thing. I left the resonators though. Some people like it some don't.

Edited March 26, 2022 by Byrds8

[newdude]

7 hours ago, AlexTrailBoss said:

I have a 22’ Chevy Silverado trail boss. I took the muffler off and did a resonator and flapper valve delete and it’s just straight piped. When I’m on the road and I’m approaching a red light, as it decelerates it makes a gurgle sound from the exhaust only as it slows down under 2,000 RPMS What can it be ? I NEED HELP 

 

 

Sounds normal to me.  I have a Corsa catback and it will burble and gurgle on decel or lower speed coasting to a stop.

 

If you don't like it, put a muffler back on it.  

Edited March 26, 2022 by newdude

[smit303]

I've got the gurgle with the GM performance exhaust on my 19 Sierra 6.2. It's not overwhelming. I kind of like it.

[Anon12345]

Normal.  All v8's do this with aftermarket exhaust.  The gurgle is what makes them sound so good.