What about the single chamber Flowmaster? Is this what the consider the race muffler? I seen them in one of the Year One books. It just says there very loud and recommended for off road use. I'm running 3" Flowmaster catback with single in, single out muffler, but I want a muffler thats louder than what I have now. Thinking of trying this single chamber Flowmaster. Plan on sticking with the single cat single muffler system for a while

 

what series muffler do you have? I'm running the same system but with a 40 series muffler. It's pretty loud but still throaty. You may want to check into headers as well to get rid of the cats. That'll liven thing up a bit

 

No for sure what series it is ,just know its single 3" in and single 2 1/2 or 2 3/4 out. Sounds nice, just not loud enough. Been thinking of removing the cat. We don't have emmisions, so It wouldn't be a problem. Just not for sure how it would sound with the cat off.