This is how far I got after about 7 hours of monkeying. I'm sure with how pokey I am it will take another 15-20 hours to finish both mufflers

 

Building your own mufflers? That's pretty cool, looking forward to the end results

 

It's a ridiculous amount of work when you don't have sheetmetal fab tools. Still kinda fun tho

 

Yea I'm sure it's a ton of work, but there's not too many guys who actually fabricate their own sound

 

Haha Idk how well it is going to flow, but it might sound pretty cool haha.

 

Nice. I made a Corsa style muffler (per the cutaway pics i could find) the other day. Idle and WOT sounded pretty good but part throttle was just wayy too raspy. Probably build another someday when I find some better pics.

 

Yeah it would be ALOT easier to just build a straight through muffler, which would also flow the best, but I don't want it to be raspy at all. Hopefully this one will flow really well. I actually threw out this first model and I'm changing it up a bit. Got some ideas

Found some fiberglass-type high tech stuff from 3m that's long strand. Kinda spendy