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Flowmaster: American Thunder Series

tmcbigblue

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Any more videos of this system? I'm really surprised there's not been more on here
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D3adch1ld

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I ordered mine, but it arrived with a noticiable ding on one of the tips. Gotta work it out it them for a solution that doesn't require sending it back.

To the ones who are upset about cutting the pipe: this system is a real cat back, it enlarges the piping just about 10" from the cats, so even better flow.

A out the dyno sheet: Flowmaster is dreaming, I don't expect any major gains, but I know a better flowing exhaust is needed in these cars.
 

JolleyRoger

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I ordered mine, but it arrived with a noticiable ding on one of the tips. Gotta work it out it them for a solution that doesn't require sending it back.

To the ones who are upset about cutting the pipe: this system is a real cat back, it enlarges the piping just about 10" from the cats, so even better flow.

A out the dyno sheet: Flowmaster is dreaming, I don't expect any major gains, but I know a better flowing exhaust is needed in these cars.
I think they have an axle back also. The CAT back system is 3" isn't it?
 

D3adch1ld

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I think they have an axle back also. The CAT back system is 3" isn't it?
Yes, it's full 3". They do have an axle back, but I really wanted the suit case out. And again, I want the larger pipe closest to the cats. (Not looking to takes the cats out yet)
 

ChitownStang

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I have the resonator delete h-pipe and it's slightly louder than stock, how much louder than that is the American thunder AB?
 

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D3adch1ld

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I have the resonator delete h-pipe and it's slightly louder than stock, how much louder than that is the American thunder AB?
Its going to be 30-40% louder than factory. I suggest the magnaflow, I heard it in person and like it better than my Flowmaster sound.
 

D3adch1ld

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The Magnaflow was throated all around, at idle, mid and wot. My Flowmaster get louder and I feel it looses the deep for a more "old mustang" sound. I found the magnaflow to have a cleaner note as well.
 

ChitownStang

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Gotchya, thanks for the input.
I just ordered the american thunder ab to go with my h-pipe res delete, hope i don't regret it
 

D3adch1ld

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Gotchya, thanks for the input.
I just ordered the american thunder ab to go with my h-pipe res delete, hope i don't regret it
The AB has different mufflers, I think your series mufflers should sound better. Please le me know because I'm considering the Outlaw mufflers to replace mine
 

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Buzzard Bait

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Can someone who has the cat-back system with the 60 Series mufflers chime in about the drone level with this system? I had the axle-backs with the Super 44's on my 2014 GT and the drone was so bad it would give you dain brammage. Don't want to go through that again.
 

D3adch1ld

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Can someone who has the cat-back system with the 60 Series mufflers chime in about the drone level with this system? I had the axle-backs with the Super 44's on my 2014 GT and the drone was so bad it would give you dain brammage. Don't want to go through that again.
There is very minimal drone only when at wot on 6th at 1800 RPM, so you kinda have to make it happen, otherwise it's very composed, but in the same way, you can make it so quiet you'd think it's the factory exhaust if you only feather the gas at cruising. As the RPM rises the tone changes to the Flowmaster signature sound.
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