I have edelbrock TES headers on my 305 tbi with a gutted cat and a 80 series flowmaster muffler. its loud but not nearly as loud as i wunt it to be. woudl changing the pipe that goes from the cat to the muffle make a diff cause it looked liek its is close to 3 inch so i didn't change it

 

if you take off you cat. and increase your pipe size its going to mellow it out more than make it louder. try glasspacks:-) and acam will help too

 

you want REALLY loud? I've drivin around the last 2 days with just my y pipe until this weekend when I put on my exhaust.

 

thats awsome man!!!! was it unbealivebly loud? did it sound real strong? how about the cops did u have to drop it in neutral whenever u saw one?

 

I ran open pipes one day, when I was cruising at about 55 mph, it didn't really sound that loud in OD. But once you give it gas or take , WOOOOOW. I threw a rev at a *****, he must have been "I need a 10" tip I guess"

 

Hell yeah man, disconnecting the Y-pipe is fvckin SICK!! Friend at school has a 93 Z28, he was revvin it, it was so loud. I was in the middle lot, he was in lower, trust me its quite a distance, it sounded like someone was flooring it, but he was just reving it. So I run down, lotta kids surrounding him, he revs it again, oh man I was next to the passenger door, all sound that existed in the world evaporated and all you could hear was the exhaust. It was so loud and SCARY agressive. It even set off my other friends Z28's alarm, which was right next to him. So I was like whoa! and everyone is like he "has no exhaust", I was like what no exhaust? So I look for the pipes, I was like yeah he does (kids these days they call mufflers the "exhaust"). I asked my friend if he was had a cutout, he was like no the Y-pipe is open. He was like go look. So I looked and there was the pipe just hanging there. It was so sick, and LOUD, too bad its not legal, damn. After hearing that you may never want to go back.

EDIT: He also said it stinks, cuz the gases are being let out right underneath the car, but I was like its SICK tho.

 

Get a 1 chamber Flowmaster.

 

Can you fit a 1 chamber racing Flowmaster somewhere after the cat (maybe before or after the rear axle) 'cause those things are short and then split it to two pipes and run those out the back. Something I've been wondering. Or hell, if you can find someone to pass inspection, replace the cat with the flowmaster???