Tired of the research

[Chevynoob]

Been on many forums and watched countless YouTube videos on finding an exhaust that sounds aggressive and good especially during acceleration while not running into AFM issues when going into V4 mode. I’m aware GM performance has a Borla cat-back and full exhaust system but I heard they’re not that loud. Maybe I’m wrong. 
 

My question is has anyone done a simple flow master 10 or 40 swap of the muffler but kept the flapper valve installed? Did that help with the V4 issue or what was the outcome of that? I also don’t want to do a tune to disable AFM as the truck is brand new and don’t want to run into warranty issues. 
 

Nny thoughts on what the best setup is to bring my 2020 6.2L Trail Boss LT alive without ECU tuning and no drone would be great!!

[Flatblack83]

I did a borla s type and its loud, no drone either. Cruise is mellow but on the throttle it wakes up. I also used an afm disabler from range.  Just unplug it from the obd2 port when you take it to the dealer.  Works perfect all the way for me and it's in v8 mode all the time.

 

A few videos out there with a flowmaster 40 which is quiet,  they switched to a 10 and it sounds decent. Most keep the flapper tho.

Edited April 17, 2020 by Flatblack83

[Chevynoob]

@Flatblack83 Can’t the dealer tell that someone was once plugged into the port at some point?

 

Also, if I went the cheaper route, would you still need the range disabler if you left the valve intact and just putting on a Flowmaster 10?

 

Thanks!

[Flatblack83]

Not sure, mines been to the dealer for the recalls 3 times and today for an oil change and not a word is said.  Without the disabler no matter what u do when the afm kicks in it will sound like ass.

[Chevynoob]

@Flatblack83 so you just take it out and it goes back to normal? Any check engine lights with it in or other issues?

[Chevynoob]

Also, do all Chevy trucks have AFM? I have a 6.2L, I assume it has the same issue.

[Flatblack83]

No, just the 5.3 custom trucks have afm. The others have dfm.

[SkiDooNick700]

14 hours ago, Chevynoob said:

 

 

I would check a few videos on YouTube with the flapper still installed.   I know I heard a couple videos where you can hear the flapper rattling around at idle.  Not sure if that is a concern to you or not. 

 

I just wanted to mention Black Widow mufflers to you as an option instead of Flowmaster ( I used to be a flowmaster guy myself).  I doubt I'll ever get a flowmaster again due to drone and less quality tone.

 

Black widow is also running a 20% promo for weeks now code FUVIRUS.  Check their Facebook to verify. 

 

Videos of my Venom 250 setup on my YouTube channel SierraNick62.  Both interior and exterior sound.

[Chevynoob]

Honestly seems like the best and easiest way around the DFM is just using GMP products.

[CP312]

I just put Borla ATAK on my 6.2 AT4 yesterday. Really growls at start up and sounds great when accelerating. No drone at all. You can hear it a touch in the cab but it’s very minimal. If you have the radio on at all you can’t hear it at cruising speeds. I couldn’t be happier with my choice, glad I didn’t go with a quieter option. Install was a breeze as it’s very well made! Great clearance all around.
It’s also on sale until the end of the month.


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[CP312]

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[CP312]

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[CP312]

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[Chevynoob]

12 minutes ago, CP312 said:

I just put Borla ATAK on my 6.2 AT4 yesterday. Really growls at start up and sounds great when accelerating. No drone at all. You can hear it a touch in the cab but it’s very minimal. If you have the radio on at all you can’t hear it at cruising speeds. I couldn’t be happier with my choice, glad I didn’t go with a quieter option. Install was a breeze as it’s very well made! Great clearance all around.
It’s also on sale until the end of the month.


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Was it bought directly from Borla’s site or is this the GM performance model? Also, does it have any issues when going into DFM? Based on your comment I’m assuming it doesn’t but just want to be sure before forking over a grand on some metal. Also I assume the AT4 is the same configuration as a 2020 6.2L 1500?

 

thanks for the comment!

[Chevynoob]

@CP312 Also was it just a cat back for full exhaust swap because I’m seeing a couple different options? I also see that you’re using the stock muffler tips, I’d like to look at the quad exhaust tip from Bora.