do i go with a h pipe or a x-pipe or 2 sperate pips all at 3 inchs thick...which is best power power

 

X pipe will give you more flow but a raspy sound that is not liked by some but again loved by some ....
H pipe a little less flow but gives a deeper sound that is more throaty by again its all sound preference ... i prefer the h pipe because i like that sound but the x pipe sounds good as well and you also have to look at what kind of exhaust set up you have .... some axlebacks sounds a lot different with the different mid pipe you just have to listen to sound clips and see what you want the most.

But if your just power hungry and dont care what it sounds like get the x pipe

 

+1

Keep in mind that seperate pipes is a really bad idea. Expect to LOOSE about 20 HP if you do that.

 

Hope you have enough HP to constitute opening your exhaust to 3 inch. Remember bigger isnt always better, you need that back pressure

 

The White Stallion hit the nail on the head.
I think a 3 inch pipe is to big.

 

+2 x pipe will make the most power and you do not want to upgrade to a 3 inch pipe until you go building a motor or installing a s/c or turbo

 

I agree until the back pressure statement. You don'tneed back pressure. Back pressure pushes back against the piston and costs you HP. The problem you have withtoo largeof a pipe diameterfor your application is that you lose gas velocity and to a lesser extent the gas cools quicker. The gas expands more in the larger pipe and slows down and it also slows down as it cools since it's denser. Larger pipes sometimes don't scavenge as well due to this and scavenging helps to eliminate back pressure.If you take a 281, blow it, cam it, bore and stroke it, then yeah you couldstep up to 3" exhaust since you will have a very dense charge coming out of the exhaust port and it needs to expand a little to movebetter, otherwise stick with 2.5" pipe.

 

I agree with you that bigger isn't always better. However, backpressure has little to do with it. Backpressure is ALWAYS bad. However, a larger diameter pipe can upset the resonance tuning of the exhaust, and thatmight costyou power.


More reading: https://mustangforums.com/m_1520122/...tm.htm#1521527

And here: https://mustangforums.com/m_2362117/tm.htm

Still, it's been established that the 2.5" tubing is plenty on these cars, unless you plan on making more than 600 HP or so....

 

I totally disagree there....actually kind of tired of hearing the x pipe sound described as raspy..... raspy means



harsh; grating; rasping.



2.
easily annoyed; irritable.
I do not feel the sound of my car is any of that.... I think allot can be said for your setup as well....I have heard h-pipe setups with different axelbacks that I did not care for at all. I personally have had both aftermarket x pipes and h pipes and personally I have been much happier with my crisp clear sound of the x pipe...is there a noticable note difference between h and x pipe...of course....search this forum and you will get a million opinions. ..but for anyone to decribe it as raspy....that to me is an injustice to the sound....IMO

 

+1. Knowing the differences about the x and h pipes, I still went with the o/r h pipe because of the sound it produces.