diy exhausts

my current diy exhaust is made of random bits of pipe and sounds horiffic, it was meant to though, it's on my dirty, battered E36 d-izzle daily. BMW looks, tractor soundtrack

I want to make an exhaust box for mine. The Scorpion one i've got is ginormous. A few months ago I bought a load of empty "display" stainless steel back boxes from work. I was thinking of chopping a couple up and using the sheet to make one the right size, then using the perforated pipe sections out of the scorpion silencer. However i've got no idea what sort of layout the perforated pipe needs to be inside the silencer. Has anybody got any pics for ideas? I don't want the car to be too loud.

The exhaust has one inlet and I want 2 tailpipes. I was thinking something like this



Also what do I fill the muffler with? I made a straight through one for the Uno and filled it with chopped strand glass fibre and it made no difference to noise what so ever. Do I even need to put something in it?

Matt

I needed a proper baffled muffler on my rover p6 but having nowhere to put it except inside the narrow tunnel I had to make my own. I bought 1 meter of stainless perforated tube, and acquired a few sheets of stainless steel. I cut the perforated tube into 3 equal lengths then welded them together side by side with the middle one offset from the others by almost 2". I made two ends, one with a central hole and the other with two outside holes and slid them on, and wrapped a bit of stainless round it:





I packed it with rockwool then welded the ends in place:





It brought the exhaust noise from a deafening rumble to an acceptably level with only two cherrybombs on the ends to finish it off.