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2015 RT 5.7 M6
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12,767 Posts
Welcome to the forum. FYI - this company has a 3" system that promises gains and great tone.
 

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2015 RT Shaker (STP/A8/FORGED/NAPPA/NO SUNROOF)
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710 Posts
Mostly just louder. Also, weight savings.
 

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Registered
2015 RT 5.7 M6
Joined
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12,767 Posts
So I did just binge watch engine masters the other day and they showed some gains going from a 2.5 to 3.0 exhaust.

In another episode they showed power curve differences between dual, x-pipe and h-pipe exhaust.

I myself never really looked to exhaust for big gains in power...except for switching to long tube headers, which on a 5.7 can net sizeable improvement.
 
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