1. You have 2 extra cylinders 

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2. You have BORLA. 
3. You have headers.
 
All i have is the mac cat back exhaust.. 
 
Soon: high flow cats and long tube headers 
 
 
It`ll sound pretty much the same + louder 
 
 
 
 
Oh and at 5k RPM when I drive.. it sounds so good !! I let my friend drive the car around the block without me in the car.. and I told him to floor it so i can hear it... it sounds awesome

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