I have a 1 3/4 header/magna flow cat and a 3" downpipe with a 2.5" exit. I currently have a 3" vibrant exhaust with a resonator and muffler and it is still loud as ****. I did this set up because I was going to do a tvs swap, but now I am going to just keep it with the stock blower. I really can't take the sound anymore, so I was going to order a 2.5" exhaust. Will there be much of a difference from the 3", even with my 3" down pipe?

 

If you want my gmpp touring exhaust I'll trade you for the 3" inch vibrant exhaust? PM if your interested

 

hows the sound