Corsa has a 4" diesel muffler. They use the same sound wave canceling principal as these resonator tubes, they just build it into the muffler and they are big $$$.

 

Didn't even think diesel. I just remembered all their gas systems were usually 3".

I have the corsa system on my truck and it sounds good. Will have to see how far I can take it once supercharged and supporting mods.

 

I think im gunna give this tube idea a try, I like the sound of the magnaflow when I get on it, id just aswell leave it if I can just get the drone to go away

 

I'm re don't my exhaust too, this 30 in tube might be added. ThAnks everyone