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Old 03-31-2018, 07:08 PM   #1
blazzin1


 
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Flowmaster vs. Stainless Works???

Going to be upgrading factory NPP very soon. Keeping the factory manifolds and primary cats for now, and want to keep both my NPP and AFM functional. Have narrowed it down to one of these two systems, but having a tough time deciding which way to go....

Flowmaster American Thunder w/NPP (817746)
Flowmaster Scavenge X-pipe w/AFM (81084)
Borla Secondary Cat Delete pipes (60626)

or

Stainless Works Full Cat-Back w/ NPP & AFM (CA16AVCB)

Basically, I can get the full Stainless Works system for only $200 more than the Flowmaster/Borla system. I'm pretty sure the SW system is probably better quality, and it is 304 SS vs. 409 SS on the Flowmaster system. But after listening to quite a few video clips (I know, I know, that's not a reliable reference source.... but it's all I have), I think I like the sound of the Flowmaster system a little better, sounds a little "deeper".....as far as I can tell from the sound clips. Plus, I've read a few complaints on this forum about highway drone with the SW system.

Any advice or suggestions are appreciated....
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Old 04-02-2018, 09:05 AM   #2
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https://youtu.be/hiy9tam11nc

This is the flowmaster system , I’ve added a custom H pipe since then and it sounds even better now and deeper and more crackle and pop
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Old 04-02-2018, 09:22 AM   #3
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Quote:
Originally Posted by Jdelgado92 View Post
https://youtu.be/hiy9tam11nc

This is the flowmaster system , I’ve added a custom H pipe since then and it sounds even better now and deeper and more crackle and pop
How is it with the valves closed?
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Old 04-02-2018, 09:45 AM   #4
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I too went with the Flowmaster American Thunder exhaust because I've used them on my previous fifth gen Camaro's. I love the sound, quality and end results!
I wanted to keep the NPP and the AFM as well so I went Flowmaster axle back and then added the Scavenger X pipe which gave it an even deeper throatier sound and I'm completely taken by it. It was definitely the way to go for me. No drone anywhere on the power band and it's not overwhelming but much much loader than stock. Sounds great on all modes of the exhaust settings.

Good luck with your project and I can only say, video/audio clips do this system no real justice.....
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Old 04-02-2018, 02:25 PM   #5
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How is it with the valves closed?
I wanna say vlaves closed is about the same loudness as stock with valves open but deeper sound obviously. Maybe even a tad bit louder.
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Old 04-02-2018, 03:17 PM   #6
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Flowmaster super 10’s save your money. Super 10’s give you a low growl and are aggressive
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Old 04-02-2018, 05:36 PM   #7
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Quote:
Originally Posted by Jdelgado92 View Post
https://youtu.be/hiy9tam11nc

This is the flowmaster system , I’ve added a custom H pipe since then and it sounds even better now and deeper and more crackle and pop
Dang! Thanks for posting that video! That sounds WICKED!!! I think that pretty much convinced me to go with FlowMaster!!
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Old 04-03-2018, 01:06 PM   #8
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Quote:
Originally Posted by Jdelgado92 View Post
https://youtu.be/hiy9tam11nc

This is the flowmaster system , I’ve added a custom H pipe since then and it sounds even better now and deeper and more crackle and pop
Damn, that sounds beefy
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Old 04-03-2018, 10:26 PM   #9
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I have that exact setup, Flowmaster + Borla. Beware, the Borla and Flowmaster pipes aren't designed to work together, the angles are a little off causing the end of the scavenger x-pipe not to mate up to the axle back. It took Jannetty Racing like 4 hrs to get it to work. With that being said, I love the setup. Sounds similar to the linked vid above, but a little louder with more pops and crackles. There is no drone at all and tour mode is much quieter. Only complaint is there is a rattle at 3k RPM under acceleration in tour mode. I haven't heard of anyone else having the rattle with this system. Flowmaster will fix it under their warranty, but I just don't feel its significant enough to reinstall at this point.
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Old 04-04-2018, 01:11 AM   #10
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That last video sounds amazing
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Old 04-04-2018, 08:17 AM   #11
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@flowmaster where’s my sponsorship, Been getting you customers left and right

I gotta upload a video with the H pipe installed , sound away better now. I have video on my iPhone but the iPhone catches every other sound especially the wind so it doesn’t sound as clear as this video up here ( shot on a galaxy)
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Old 04-04-2018, 09:10 AM   #12
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Flowmaster vs. Stainless Works???

Here is mine and this was just the axle back. I haven’t added one with the Scavenger X in play but it sounds fierce as well as deep!
I can’t seem to embed as usual but here’s a link.

https://m.youtube.com/watch?v=4NkuuG64SuI
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Last edited by chozn4service; 04-04-2018 at 09:30 AM.
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Old 04-04-2018, 10:22 AM   #13
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Quote:
Originally Posted by M12LRV View Post
I have that exact setup, Flowmaster + Borla. Beware, the Borla and Flowmaster pipes aren't designed to work together, the angles are a little off causing the end of the scavenger x-pipe not to mate up to the axle back. It took Jannetty Racing like 4 hrs to get it to work. With that being said, I love the setup. Sounds similar to the linked vid above, but a little louder with more pops and crackles. There is no drone at all and tour mode is much quieter. Only complaint is there is a rattle at 3k RPM under acceleration in tour mode. I haven't heard of anyone else having the rattle with this system. Flowmaster will fix it under their warranty, but I just don't feel its significant enough to reinstall at this point.
That’s GREAT information to know! Thanks for sharing! So not gonna be able to install this system in my driveway then!!! Crap!!! Hmmm....but it sounds so good!!! 🤬
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Old 04-04-2018, 07:02 PM   #14
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Flowmaster is okay I guess. Nice deep tone at idle, lot more pops and cracks. WOT sounds about the same as NPP. Valves rattle like shiiit so I had to pull the fuse out sounds much better with headers.
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