H-Pipe vs. X-Pipe vs. Straight-pipes

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cjdive

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Question...what is the deal with using either an H or X-Pipe? Why not just come straight back from the headers? What does having the pipes cross (or join) do? Does it lower back pressure? Would not 2 independant pipes straight back provide more power?

Pardon my ignorance!

Thanks.
 
The exhaust pulses alternate from the left side to the right side alternately (as the cylinders fire). When you use an X-pipe, it creates a scavenging effect where the pulse from one side basically helps suck the upcoming pulse through the other side. Hope that makes sense, I'm sure someone can explain better. An H pipe has somewhat of the same effect, but not as much.
 
H pipe balances pressure. X pipe does as said above along with the pressure.
True duals are fine and easier to do. But the factory left thisidea behind a long time ago.
 
i put an X pipe setup on my stroker going from just strait pipes. I re-used the same Borla muffs, and the X made the car considerably quieter. I love the X setup. I couldnt really tell a seat of the pants difference, but i'm sure it helped on the flow of the system...
 
I tuned and ran open TTI 1 5/8"-1 3/4" step headers with collectors for several years. Then I added their 3" X pipe ending with 3" Dynomax Ultra Flo mufflers at the rear end housing and went faster. It was at least .05 to around .10 in the 1/4. I did remove the 60lbs it all added from elsewhere in the car to keep the weight the same and jetted down a bit for best results in my combo. But it definitely helped. (Your results may vary.)

It's just a little inconvenient when I have to swap transmissions or rear end gears.
 
Ha, I just burnt up my trans, and didnt even think about the pipes in the way till you said that.Some clamps for disasembly would be a good idea rather than a fully welded setup.
 
Actually, I just unbolt them at the collectors and the hangers above the rear end housing.
TTI uses heavy duty material in pipes as well as hangers and it's held up well.
 
Thanks! That helps. Also go to know that straight pipes are also louder!!!
 
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