x pipes are better they use the x pipes in nascar uses this same set up an the 2000 cobra r also.its not as loud but its very smooth .an deep

 

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?

 

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.

 

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.

 

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.

http://www.carcraft.com/techarticles/69238/index.html

"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!"

I totally believe it's worth it, but you may not.

 

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 thinkpipe sizeand type of car play a role in the results too. <edited><editID>mdvaldosta</editID><editDate>37902.4381828704</editDate></edited>

 

2 more peak horsepower is alot if it was on a lawnmower engine

 

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.

 

"A lot" depends on what's done to the motor. The more power you currently make, the more the gains you can get.

 

I had my exhaust x'd out with borla catback exhaust,switched to H and sounded much better,but i geuss it all depends on what u are looking for