Why the X Pipe?

RGV Titan · 06-24-2005, 10:49 AM

Had a muffler shop install twin Borla XS mufflers and cut off the factory Y pipe with straight tubing to the muffler. I've seen pictures where members did the same but had the pipes cross over in an X before entering the muffler. Why? I believe Sammy's and Gr8titan's were like this. Why is this necessary or important and why is it done? Thanks in advance.

PeaceKeepr · 06-24-2005, 10:53 AM

find gr8titan's site and read his theories....something to do w/ pulse cancelation...simple it helps equal out the exhaust---correct me if I am wrong.

**HudsonValleyTitan** · 06-24-2005, 10:57 AM

I believe it also helps with backpressure. True straight through pipes lose a little more torque. I've seen dynos, not on the Titan, that showed that a true straight through design loses torque because there's almost no backpressure at all. Pulse cancellation is another reason I've read about.

Sammy Sandbag · 06-24-2005, 11:38 AM

Scavenging, without a Y/H/X you lose it. Do a search, there are tons of posts on this topic.

RGV Titan · 06-24-2005, 12:07 PM

Quote:

Originally Posted by HudsonValleyTitan

I believe it also helps with backpressure. True straight through pipes lose a little more torque. I've seen dynos, not on the Titan, that showed that a true straight through design loses torque because there's almost no backpressure at all. Pulse cancellation is another reason I've read about.

What is pulse cancellation? I think I heard it.

gftitan04 · 06-24-2005, 07:27 PM

I was told that it is more for back pressure than anything.

Here's a pic of my set up.

fdiesel · 06-24-2005, 07:34 PM

i have my factory Y do i need to change it or no.the muffler shop told me the H pipe is for if you have two mufflers then the H divides the flo even but 1 muffler only it's a wast of mony.is that true

**gr8titan** · 06-24-2005, 08:17 PM

Quote:

Originally Posted by RGV Titan

Had a muffler shop install twin Borla XS mufflers and cut off the factory Y pipe with straight tubing to the muffler. I've seen pictures where members did the same but had the pipes cross over in an X before entering the muffler. Why? I believe Sammy's and Gr8titan's were like this. Why is this necessary or important and why is it done? Thanks in advance.

Click on this link: www.usantonio.com/ractive_exhaust.htm and you'll find a "compressed" research version of some of the theories/principles I dug up on "X-pipes", performance and mufflers in general prior to the fabrication of my exhaust system.
Check these 8 pages of custom exhausts made by my fabricator and notice how they balance the entire system.
Hope this helps.

RGV Titan · 06-24-2005, 08:53 PM

Quote:

Originally Posted by gr8titan

Click on this link: www.usantonio.com/ractive_exhaust.htm and you'll find a "compressed" research version of some of the theories/principles I dug up on "X-pipes", performance and mufflers in general prior to the fabrication of my exhaust system. Hope this helps.

Thanks brother, that answered all my questions. All I need to do is find an x-pipe at a good price.

Ryan Hubbard · 06-24-2005, 11:54 PM

I used to work for the guy who came up with the x-rossover. His name is Boyd Butler and his company is Dr. Gas. He supplies almost all the Nascar teams with their exhaust systems. He is big in the racing industry but everyone else supplies the street applications. You can go to his website Drgas.com and see some of the articles about the exhaust systems. It was through working for him that got me to work for Roush. He has just focused on the racing scene and not the street scene. He also has a great muffler design that is now being copied.

Regards,

Ryan Hubbard

RGV Titan · 06-25-2005, 08:41 AM

Thanks Ryan, good info!

fdiesel · 06-25-2005, 11:38 AM

well i only have 1 flomaster one in two out so x pipe will not work for me.so now what

**gr8titan** · 06-25-2005, 01:50 PM

Quote:

Originally Posted by fdiesel

well i only have 1 flomaster one in two out so x pipe will not work for me.so now what

Not to worry. You already have a Y-pipe upstream. But unless the Y is the OEM (which is very restrictive), you may want to change it with an aftermarket version that is equal ID throughout for improved flow.

fdiesel · 06-25-2005, 08:01 PM

Quote:

Originally Posted by gr8titan

Not to worry. You already have a Y-pipe upstream. But unless the Y is the OEM (which is very restrictive), you may want to change it with an aftermarket version that is equal ID throughout for improved flow.

yea mine is OEM.so i just tell the muffler shop to take that one off and put another one.is this something they stock like X and H pipes.any pics please so i can have a idea of what it looks like

**gr8titan** · 06-25-2005, 09:04 PM

Quote:

Originally Posted by fdiesel

yea mine is OEM.so i just tell the muffler shop to take that one off and put another one.is this something they stock like X and H pipes.any pics please so i can have a idea of what it looks like

Ryan Hubbards post above has info of Dr. Gas' Y-pipe that is constant diameter VS the restricted Titan OE y-pipe. Changing the OE Y-pipe gains you back some significant power lost to the very restrictive OE design. Shop around and you should get some good pricing for the Y's or maybe some TT members could lead you to their source/s. Hope this info helps