I'm thinking of tinkering with my exhaust a little more. Right now its a single 2.5" pipe, into a Magnaflow 5x8x18 muffler, exiting in the stock location with a 3.5" tip. It also has a Walker downpipe installed, which eliminated the "pre-heater" cat, and the other original cat was removed long, long ago.

What I would like to do is try and get a slightly deeper tone out of it. Also, the tail pipe was crush-bent to go over the axle, and it has some pretty severe bends in it, some look like they neck the pipe down to under 2"! So, I figure to kill two birds with one stone, I am looking at installing a 3" mandrel bent section of tail pipe from Magnaflow (that is built to fit 87-96 Ford trucks), and topping it off with a 4" tip. I'm thinking, for one, the larger diameter pipe & tip might change the tone a little, and the mandrel bends will be a lot nicer than the crush-bent pipe it has now.

So, what do you think? Would it change the sound much? Would there be any adverse effects from using a 3" tail pipe when all the pipe before the muffler is 2.5"? I would assume that anything behind the muffler wouldn't matter too much, just so long as its not restrictive.

 

Using the mandrel bent pipe will give it better flow, as for sound yes the largewr pipe will resonate a deeper tone, as will the 4 inch tip, should give it a healthy rumble. The larger pipe after the muffler should be okay.