Muffler swap, flapper+resonator screen delete

Chips · July 28, 2020

Dropped my truck off this morning to get the resonator screens removed. Cutting the section out containing the three screens on each side, welding in 3” pipe . Its roughly a 12” section on each side.

Flapper was removed with stock muffler and a black widow put in place. Just picked it up. It sounds way better with those screens removed , and I also feel like the truck has more bottom end with screens removed .

Driving at 40km/h , 60km/h and 80km/h. No drone whatsoever. Its shockingly silent in the cab at cruising speeds.

starting thread to upload some videos after work.

Chips · July 29, 2020

Quick cold start and a few revs .

didnt want to rev her to hard its late lol.

https://streamable.com/5jr012

https://streamable.com/qvr525

beefin06 · July 29, 2020

22 hours ago, Chips said:

Dropped my truck off this morning to get the resonator screens removed. Cutting the section out containing the three screens on each side, welding in 3” pipe . Its roughly a 12” section on each side.

Flapper was removed with stock muffler and a black widow put in place. Just picked it up. It sounds way better with those screens removed , and I also feel like the truck has more bottom end with screens removed .

Driving at 40km/h , 60km/h and 80km/h. No drone whatsoever. Its shockingly silent in the cab at cruising speeds.

starting thread to upload some videos after work.

Really, no drone at all? That's awesome!

Do you have a link to the black widow muffler you purchased?

Chips · July 29, 2020

1 hour ago, beefin06 said:

Really, no drone at all? That's awesome!

Do you have a link to the black widow muffler you purchased?

Yeah, I can only speak to my truck. With the duals rear exit . I know some trucks have side exits. But these trucks are well sound insulated. Quiet in the cab.

https://www.blackwidowexhaust.com/mufflers/Race-Venom-3-offset-offset-SKU-BWOOR-33-p108144418

Edited July 29, 2020 by Chips

Chips · July 29, 2020

In cab start and acceleration.

https://streamable.com/xkjioj

https://streamable.com/7cq5ec

https://streamable.com/7hv6zn

Edited July 29, 2020 by Chips

beefin06 · July 30, 2020

7 hours ago, Chips said:

Yeah, I can only speak to my truck. With the duals rear exit . I know some trucks have side exits. But these trucks are well sound insulated. Quiet in the cab.

https://www.blackwidowexhaust.com/mufflers/Race-Venom-3-offset-offset-SKU-BWOOR-33-p108144418

Awesome! Thank you.

AEmedic · July 30, 2020

I am leaning towards a similar change to my 6.2 HC. Is there any down side of removing the valves? Codes? I'm not sure what muffler I will choose...I am a fan of Magnaflow. Are there any inherent flaws to the rest of the OE cat-back system other than the screen, the valves and the quiet muffler?

Chips · July 30, 2020

39 minutes ago, AEmedic said:

I am leaning towards a similar change to my 6.2 HC. Is there any down side of removing the valves? Codes? I'm not sure what muffler I will choose...I am a fan of Magnaflow. Are there any inherent flaws to the rest of the OE cat-back system other than the screen, the valves and the quiet muffler?

No down side, the flapper should be removed when changing the muffler. The muffler is big, heavy and restrictive . You wont get an aggressive tone with the screens in place , if you have the resonator screens if not and you have an actual resonator then the same thing, it should be removed unless you are after a milder tone.

All these components are after any sensors so no issues with codes or anything.

Ill post some pictures of how she looks.

AEmedic · July 30, 2020

20 hours ago, Chips said:

No down side, the flapper should be removed when changing the muffler. The muffler is big, heavy and restrictive . You wont get an aggressive tone with the screens in place , if you have the resonator screens if not and you have an actual resonator then the same thing, it should be removed unless you are after a milder tone.

All these components are after any sensors so no issues with codes or anything.

Ill post some pictures of how she looks.

Is yours a 6.2? Is yours 3" pipe throughout?

EricTheRed · August 13, 2020

On 7/30/2020 at 4:59 PM, AEmedic said:

Is yours a 6.2? Is yours 3" pipe throughout?

I think he has a 5.3L because he only mentions one flapper valve and the resonating screens.

AEmedic · August 13, 2020

1 hour ago, EricTheRed said:

I think he has a 5.3L because he only mentions one flapper valve and the resonating screens.

Thank you. I did determine what the 6.2L has. It is 3.5” that necks down to 3” at the flappers at the inlet and outlet of the muffler then back to 3.5” till it reaches the Y at the axle.

EricTheRed · August 13, 2020

Here is what I’m debating about trying...

Spyderwebb · August 19, 2020

Very tempted as well, I've found an AFE for $110 (out of stock) at American Trucks) and a Magnaflow for $178 (in stock), debating on if the Magnaflow is the better option, but it's just a straight pipe???? Otherwise, just worried about the sound with the variable cylinder deactivation !

Chips · August 19, 2020

3 hours ago, Spyderwebb said:

Very tempted as well, I've found an AFE for $110 (out of stock) at American Trucks) and a Magnaflow for $178 (in stock), debating on if the Magnaflow is the better option, but it's just a straight pipe???? Otherwise, just worried about the sound with the variable cylinder deactivation !

So it depend what you are looking for . I can tell you the 2020 trucks are way way quieter than the 2018 . Im not quite sure what they did .

For myself I probably should have straight piped it. My Black Widow setup is nice and fairly loud. But its still not near my 2018 with the same exact setup.

im convinced you just cant make them loud , maybe a straight pipe?

With the resonance pipes removed and the flapper removed , Black Widow Race Venom it sounds good, not loud at all unless cold start, in cab noise is noticeable at 100 km/h to 115 km/h after 115 it goes away. Under that or over that range its quiet in cab.