-Exhaust**
**I'm a complete dumbass on the exhaust system. It is stock now and I'd like something a little more aggressive but not at all annoying. Could someone explain the terminology? I see all this talk of cat-back and x and h pipes and such, I have no friggin idea what the hell you all are talking about and couldn't find any one thread here that explained it all.
Thanks.
Really? I will do my best for you.
Well the X and H pipes are different configurations of exhaust crossover pipes. In the X or H pipe is where you will find the catalytic converters are implanted. The X pipe is a better crossover pipe for total power, but it comes at the cost of being higher pitched, and people like me, and I believe you, don't really want that NASCAR sound. The H pipe on the other hand will free up power, but it has a deeper more mellow tone. The factory cross over pipe is an H-pipe, but it has 4 converters in it which pretty much kill the exhaust tone.
When replacing the crossover ( with an X or H) pipe and the Catback with performance parts, the bulk of the power will be found in the crossover pipe as the factory catback is fairly freeflowing.
The cat back is really just a term that describes the position of the pipe in relation to the catalytic converters and the rear of the car and thus the H or X pipe. This is where in my opinion a huge difference in sound can be found. Yes the other components contribute, but this is the main part when considering the sound. The cat-back (catalytic converter and back pipe) contains the pipes which on solid axle cars goes OVER the rear axle, and on IRS equipped cars like the 03-04 Cobra goes under the rear differential and out the rear of the car, and it also is where the mufflers are welded in. Again my opinion is that the
Flowmaster muffler is about the loudest highest drone muffler available, and pretty annoying, but my personal favorite is the
MagnaFlow muffler, NOT THE MAGNAPACK, but the MAGNAFLOW, this muffler incorporates a straight through design which maximizes power gains, and allows the exhaust to escape with very little restriction, but in a very deep and low volume level. The Flowmaster has chambers in the muffler which makes the sound and air trying to escape bounce around in and create more noise and becomes more irritating.
All of this is in relation to the 4.6 SOHC motor, and does not necessarily apply to the 5.0 or DOHC 4.6 or any other motor for that matter. I have tried a number of combinations over the last 10 years, and truly I believe that for the 4.6 the Off Road H-pipe and MAGNAFLOW Catback is the best choice for Mustang exhaust.