Exhaust flows out the cats in parallel and makes a u turn.
It then passes under the oval pipe and makes another U turn at the backside of the front most bulkhead. It flows thru the oval pipe to the last chamber with the three outlet pipes in it.
A good shot of the inlet and the inlet two the two cats and why two large diameter ones are used.. Look at how much of the tube the catalyst takes up..
The stock muffler is a restrictive heavy pig that cooks your ass because they put a catalytic converter pretty much under each cheek of your bloody bum...
It is built pretty sturdy.. I drlled out a few spot welds, ground it to thin the seam weld (perimeter of halves) then split it with a air hammer bit that I tweaked to match the shape of the seam and to split it just right...
I also just cut across the back 1/8th or so that I did not need to cut around each outlet pipe..
I have plans now as how to alter things inside to create awesome flow, lighter weight, better sound and alot less heat...
Catalytic conveters get hot and stay hot... In fact the hotter they are (unless melting hot) the better they work... The need to go... The OEM should have put the cat converters at or past the collector not under the seat in the muffler
[ This message was edited by: MNSpintST on 2006-11-11 22:23 ]
I'm not being cocky but I think my tricks will out flow a OR pipe.
If anyone in the MN area has one unmounted I'd like them to meet me at the flowbench. This way I can flow test a stock, my modded and a off road to have a accurate test of all of them.
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