I cut out my cadalitic converter because it was plugged. I Put a pipe in place of converter. There is a new muffler on and it is pretty loud. Is this because I just have a pipe in place of converter? What can I do to quite the exhaust without breaking the bank. What about the resonater? Should i put a converter back on to help quite it? How can I trouble shoot this so I don't waste money? Any help is appreciated!

 

Well for one, removing your cat makes it a good bit louder. And depending on the muffler you have on there, that adds to how loud also. Say your stock muffler versus a flowmaster super 44 is like night and day. The super 44 is quite a bit louder. So to sum it up, taking a cat off will make the exhaust louder and also putting on a new muffler (less restrictive) will make it louder.

First start by replacing the cat to quiet it down.

 

Thanks, I agree.

 

01 2001 Chevrolet Blazer Catalytic Converter - Exhaust - Bosal, Eastern Catalytic, Walker, Rear - PartsGeek

Check the cat out that's about half way down the page. It's 66.85$. Do you think this less expensive cat would work?

 

You need to brake the soundwaves, you can think of the soundwaves as a solid arrow same size as the tube there carry the sound.




In duel installation you often see them go together in a X and then out to duel again, that breaks the soundwaves og make it more silent.




The cheapest way is to put in a conical tube inside your tube to braek the flow, small to front :



Here seen in a advanced mufler: