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I have a 07 Tahoe 4wd 5.3l and I could not decide from the Magnaflow, Corsa, Borla choices for cat back exhaust. I have been studying the cat back designs..ad naseum. I decided to first try the standard muffler replacement with the flowmaster 42443, $110 installed save $1000 and just see if I...

Hello Friends, I am really stumped, i hear this one sounds better than that one an on it goes, i believe sound of exhaust is a personal taste thing,:confused: what i am concerned about is which one produces best torque. Is Borlas 1 inlet and 2 outlet to smaller duals produce more torque than...