|
The pipes jump back to 2.35" just before entering the muffler.... that happens to be the same size that a slip to fit 2.25" muffler inlet will have. Two 6" peices of 2.25" pipe would bring it together well - you'll be able to keep the stock hangers in front of the muffler.
More info on the stock system....
The stock system is well designed for what it is. Toyota took care to slowly step down the tube size throughout the system to help keep the velocity up and probably reduce noise some. It runs tight off the header, maybe 2.12"? Then jumps to 2.50" to the first converter, then drops to 2.40" out of there, keeps that diameter though the second converter all the way to flanges where the rear exhaust bolts on (just aft the transfer case). The exhaust then drops to 2.12 into the muffler, then 2.75 out to the tailpipe. A better example may be tube ID area in sq in.
3.14" x 2 = 6.28"
4.45" x 2 = 8.9"
4.08" x 2 = 8.16"
3.14" x 2 = 6.28"
muffler not free flow, exhaust must pass through perforations
tailpipe = 5.43"
|