Team MF Member #420 Posts: 14383
Joined: 7/24/2003 Status: offline
X pipe - upper rpm power increase
H pipe - Off the line power increase (which GT's lack already).
If you plan on dragging your car, I'd say an h-pipe would be a good idea. Mustang's lack the torque a V8 should have...you need TQ to get off the line and HP to push you the rest of the way! Let the H-pipe fufill your torque needs, and all the other mods fufill your HP needs, while making minor contributions to torque along the way ;)
Posts: 147
Joined: 8/25/2003 From: United States Status: offline
Im hearing way more power in comparing X or H pipes. Neither one produces high hp numbers in and of themselves anyway. I see cars running H pipes that are faster than cars with X pipes and vice versa. We all have. Go with the one that sounds the best to you. Im curious to know which one produces the best average torque?
Posts: 2199
Joined: 3/31/2003 From: United States Status: offline
[QUOTE=vfast]
jeep... I think the h-pipe..reason being it acts like a bigger exhaust in a way that helps mild modded cars the x pipe and exhaust gases cancel one another is why for the lower tone is a good pipe for well modded car...just my opinion
[/QUOTE]
Actually, the H pipe is a cheap method to help cancel out the differences in exhaust pulses between cylinder banks, in essence, giving twice the pulse frequency and speeding up exhaust flow.
The X pipe does the same method, but instead of using a perpendicular pipe to do it, it uses a great flowing X shape. This helps torque production down low (which you people don't seem to comprehend one thing....BACKPRESSURE IS HORRIBLE) and give sweet ass numbers on the top end.
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Joined: 3/31/2003 From: United States Status: offline
Also, the Flowmaster Deltaflows.....the Arrows are in there to create a vacume to speed up exhaust velocity. It wasn't put there to quiet it down, that was more of an after-effect. Go with Magnaflow or Dynomax, they both sound sweet and deep, and have no baffles to get in the way of the exhaust and restrict it like Flowmasters do.
Inmyrearview:
"Im hearing way more power in comparing X or H pipes. Neither one produces high hp numbers in and of themselves anyway. I see cars running H pipes that are faster than cars with X pipes and vice versa. We all have. Go with the one that sounds the best to you. Im curious to know which one produces the best average torque"
Bulls**t. Not with compareable mods. If you're pitting a nitrous H pipe up against a X pipe with an intake....I'll believe you.
Posts: 147
Joined: 8/25/2003 From: United States Status: offline
Jeep45238, on two vehicle being exactly the same except one having a 2-1/2 in. H-pipe exhaust and the other having a 2-1/2 in X-pipe exhaust do you really think one is going to be SIGNIFICANTLY faster than the other? I did state SIGNIFICANTLY. Im now putting down 382RWHP and im running an H-pipe. Should I spend $400 or so on an X-pipe to get 10-15HP more?
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Joined: 3/31/2003 From: United States Status: offline
Define signifigantly. Do you mean a full blown second or a 2/10 reduction in ET's?
You do NOT need to spend $400 to get an X pipe.
Simply take 2 45* mandrel bend angles and hack off the top, and then weld them together.
) ( <~2 45* bends
)( <~Joined to form an X pipe.
If it was my car, I would definately put in the X pipe. Let's face it, the more you do to the car, the more important it becomes to have a free flowing exhaust, expecially with a blower and heads coming into the picture on your car.
Posts: 147
Joined: 8/25/2003 From: United States Status: offline
Well we both know that with the circumstances I stated above that neither car will be more than a second faster than the other. Also, if someone has a car that could use some low end toque would you recommend an H-pipe? The X-pipe and H-pipe has been debated time and time again on many foruns such as this one. If the X-pipe was clearly such a better pipe, there would be no debate. Really the only difference is the fact that they provide power at different points in the power band. They both provide about the same AVERAGE HP. Check out:
www.mustangexhaust.com/tech/HvsX/HvsX.htm
The proof is in the dyno numbers.
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Joined: 3/31/2003 From: United States Status: offline
Yes, the proof is in the numbers. Besides, in that comparison, the stock exhaust made just as much average horsepower as the H pipe and the X pipe. We both know that the stock won't stand a chance against the H or the X.
The X pipes are worth at least as much power as open headers, both in the horsepower ratings and in the torque ratings.
"Finally, we swapped on the stepped X-pipe setup and were impressed to see power levels equal to the open headers: 335 hp at 6,300 hp and 302 lb-ft at 5,200. That’s a gain of 12 rear-wheel horsepower, although it turns out we weren’t really giving anything up or gaining anything extra from the open headers. So the car’s happy, and our ears are even happier!"
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Joined: 9/2/2003 From: United States Status: offline
Different results on different cars, I wouldnt be suprised if someone could give results of h-pipes putting out more hp than x-pipes. I saw an x-pipe swap done on a 2001 Cobra and it made a whopping 2 more peak hp that STOCK CATS, the h-pipe offered identical gains as the x-pipe. I think pipe size and type of car play a role in the results too. mdvaldosta37902.4381828704
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Joined: 8/25/2003 From: United States Status: offline
Dont get me wrong if you prefer, X-pipe thats cool and you will hopefully get some gains. Im just cautious in saying that the X-pipe produces HP numbers that are a lot higher than the H-pipe. But I guess it depends on ones definition of "a lot." Also manufacturers of these products seem to always exaggerate the hp numbers or do dynos on some stroker or extemely high output type motor that of course will yield some modest gains or the gains that they advertise, but not the kind of gains a typical comsumer will see in the "real" world. The perfect example of this are shorty headers. Up to 20hp?I have a s/c and im lucky if they even gave me 8-10hp. But I see manufacturers advertise this crap all day long. IMHO, H AND X pipes serve to be beneficial, but in different ways.
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H-pipe vs. X-pipe - 
