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Old 04-01-2013, 12:29 AM   #1
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H-pipe

So I had a muffler shop realign my pypes axle backs last week (ended up having to cut the hangers off and re-weld them on) and I asked them about fabricating an h-pipe for me and they said that it would be a down grade from the stock mid-pipe. Is this true? Everything I've been reading has said otherwise and wanted your alls thoughts.
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Old 04-01-2013, 04:02 AM   #2
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Originally Posted by rmlong06 View Post
So I had a muffler shop realign my pypes axle backs last week (ended up having to cut the hangers off and re-weld them on) and I asked them about fabricating an h-pipe for me and they said that it would be a down grade from the stock mid-pipe. Is this true? Everything I've been reading has said otherwise and wanted your alls thoughts.
The stock one would be fine if ur keeping ur stock cats, if ur going off road i would say a custom Hpipe.
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Old 04-01-2013, 09:30 AM   #3
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its not going to do anything really without replacing ur stock cats for high flow cats or no cats at all ,running off road x-pipe.
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Old 04-01-2013, 10:41 AM   #4
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I'd take the word of your muffler shop; the've ben doing this more, and for so many car and engine types, that it's foolish to question them.
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Old 04-01-2013, 01:23 PM   #5
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A muffler shop also told me my factory resonators aren't resonators and to not take them out. Is that true? I dont know but I listened to em haha
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Old 04-01-2013, 01:56 PM   #6
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A muffler shop also told me my factory resonators aren't resonators and to not take them out. Is that true? I dont know but I listened to em haha
Those are resonators. Small but they are there. Behind the giant cats
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Old 04-01-2013, 02:03 PM   #7
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Unless you are going to a high flow or catless system, leave your stock One in place. If you can get around emissions and want a great sound, buy a pre made offroad H if you wand deep classic sound or an offroad x if you want a raspier racy sound.
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Old 04-02-2013, 09:10 AM   #8
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Clue me if i'm wrong-Please

From what I have learned over the past 54 years around race tracks and engine builders is this:

Straight pipe That means no X or H and are not joined together at all will sound the absolute best but will be lowest in torque and horsepower at the lower RPM's With no mufflers it is worse at the lower RPM's ( Lost Torque) OK at upper RPM's.

X-Pipe will give the best performance of them all at any RPM but does not sound as good due to the very smooth exhaust flow.

H-Pipe Increases performance over the Straight pipe and is inexpensive for the manufactures to use. It does have a better sound then the X-pipe but does lose performance at higher RPM's

I have seen race cars with a box that the headers run the pipes into the front and the tailpipes out the back that would create equal pressure and worked great but never seen one on a street car. ( That was before they had to use muffles at most tracks.)I can't tell you if they were good or not but the cars engine builders swore by them.

With today's use of computers and converters in the cars and everything from the good old days being changed it would be nice to know if any of this is still good information.

I'm always up to learn something new. I'm still having a hard time believing that just installing my Airaid CAI on my car that I already had a K&N drop in filter in the stock airbox which was also a CAI would produce so much response improvement on my 3.7 V6 engine.

Ronnie
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Old 04-02-2013, 09:49 PM   #9
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Quote:
Originally Posted by ronnie948 View Post
From what I have learned over the past 54 years around race tracks and engine builders is this:

Straight pipe That means no X or H and are not joined together at all will sound the absolute best but will be lowest in torque and horsepower at the lower RPM's With no mufflers it is worse at the lower RPM's ( Lost Torque) OK at upper RPM's.

X-Pipe will give the best performance of them all at any RPM but does not sound as good due to the very smooth exhaust flow.

H-Pipe Increases performance over the Straight pipe and is inexpensive for the manufactures to use. It does have a better sound then the X-pipe but does lose performance at higher RPM's

I have seen race cars with a box that the headers run the pipes into the front and the tailpipes out the back that would create equal pressure and worked great but never seen one on a street car. ( That was before they had to use muffles at most tracks.)I can't tell you if they were good or not but the cars engine builders swore by them.

With today's use of computers and converters in the cars and everything from the good old days being changed it would be nice to know if any of this is still good information.

I'm always up to learn something new. I'm still having a hard time believing that just installing my Airaid CAI on my car that I already had a K&N drop in filter in the stock airbox which was also a CAI would produce so much response improvement on my 3.7 V6 engine.

Ronnie
I'm with on wanting to learn new things. I'm new to working on cars and want to learn as much as possible, that is why I asked. Also, what is our stock mid pipe? When I bought my car they said it was a hybrid x and AMs website says its an X.
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Old 04-02-2013, 10:03 PM   #10
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It's a hybrid. Not quiet a full X, but it promotes more crossflow than a true H. Seriously, anything after the manifolds flows quite well. Most gains will be picked up from headers, very little from the rest.
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Old 04-03-2013, 08:32 AM   #11
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Our stock pipe is more like

Like Sanguin said:
Quote:
It's a hybrid. Not quiet a full X, but it promotes more crossflow than a true H. Seriously, anything after the manifolds flows quite well. Most gains will be picked up from headers, very little from the rest.
Our pipe is more like a Siamese twin the way it comes together and meets. I'm guessing it is a factory compromise between the H for sound and the X for flow and very inexpensive for Ford to produce. No complaints though because it seems to function very well and does a very good job of producing excellent flow and a fairly good sound.

Ronnie
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Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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