When you have a 1 chamber muffler compared to a 4 or 5 chamber muffler. It alots more flow and less restriction. Just like yelling in one BIG ROOM or yelling in a house with the same room broken up into 4 or 5 rooms. Honestly if i were you id run trual dual straight pipes..aka catbacks. maybe mix it up with an X pipe or H pipe..you would still pass all emissions tests b/c your not cutting out any cats and your going to have a great sounding truck..My 02 f150 4.6 had 2 1/4" running pipes true dual catbacks to 3 1/2" stainless tips..and was one of the loudest f-150 ive heard..

 

Umm... a 40 series is a 2 chamber muffler there pal.

 

ok cool as long as the right info is going to him...so thanks for clearing it up..i like true dual straight pipes.maybe with an x pipe to mix it up a bit..but to each his own

 

To each his own agreed. The X pipe will smooth the sound and tone down on the pop and crackle. I am also partial to the X pipe. It is also known to make a few more numbers on the dyno sheet.

 

I have always heard an X-pipe will add torque and an H-pipe will add HP..i dunno how much of that is true..

 

Its all true. Except in trucks with offset pipes, meaning the left bank is guided over to the driver side and runs along the passenger bank exhaust.

X pipe helps with low end torque which helps move the weight of the heavy truck, H pipe flows more direct which is best when WOT.

 

so what would be better a h pipe or x pipe.....i dont do any towing, just my back and forth truck for school & football

 

H pipe if you race now and then. Otherwise X pipe performs better moving around the neighborhood, and deletes the amount of annoying rasp and crackle to a very low minimum.

 

X ftw!