since i was reading through a bunch of mustang forums last night to figure out how to get a bolt loose on my friends gt, and i was reading a bunch of stuff on xpipe vs hpipe and they said that the hpipe is creates more lower torque and the xpipe may lose some low end but gives more higher end torque. now considering our motors are better for low end torque (and tons of it!) shouldnt we be running an h-pipe? our is our setup different enough to make the xpipe act differently. the reason y i ask this is becaust i noticed that all the aftermarket exhaust catbacks consist of an xpipe

 

I think you answered your own question..... If(?) the H-pipe adds torque on the low end, you wouldn't need it---we've got gobs of torque 'there' already. There must be a reason why there are mostly X-pipes with our setups?

Dan

 

Well my old exhaust didn't have a crossover at all except in the muffler itself and by then it is probably to late. The truck screamed with that system on there.

My next system did have an "X" crossover, the truck was down on power and as a side note the crossover turned DARK purple in about 100 miles. It was about 3 shades darker in color than the SS headers themselves, but the rest of the tubing never changed color. I know very unscientific but currious anyway.

My new 3" system has an "H" crossover in it. I have some more ideas and I dont think I'm finished with it yet. Stay tuned Ha ha.
Dale

 

well LIGHTNINROD what i really meant (i dont know if i typed it right) is that the xpipe will take away from lowend and add more on the higher end, and the way i would figure it is that we should maximize our lower end because thats where all the power is. since our motors have not a very high max rpm.

 

There are major differences in x vs. h pipe and they do two totally different things.
The x pipe acts as a ventury. As the gasses pass thru the x pipe it increases the velocity of the gasses and drops the pressure of it thru your system. All an H pipe does is balance out the left and right banks of the exhaust system. And helps low end scavenging out. What makes the x pipe good on our applications is what it does at higher rpms. Where we need more torque since we have gobbs at the lower end all ready.
With that it helps get more raw fuel and air into the cyclinder as well giving more power with the better scavenging at higher rpms.
I haven't had my x pipe give any noticeable losses at lower end. Did notice a large increase at mid to higher rpms. But I installed high flow cats as well. The combination added a good amount of power for me along with the magna flow mufflers as well.
I have added all this due to the Keene Bell blower that I ordered and will be getting in March, plus getting a built up short block as well. Should be one fast HD when I am done

 

I think the X pipes work IF they don't become a restriction or in my case a big restriction. I like the X's by Dr. Gas, there is a small window between the tubes for balancing, but the exhaust flow is not deliberately crossing paths with one another.
Dale

 

Perhaps some if it is due the X-pipe is "fashionable" right now. I think if you talk with the experts you will find that there is a whole lot involved in making an x-pipe effective. They need to be tuned to a specific application/engine. Welding two pipes in the form of an X like most of the systems that are available is just a marketing deal.

 

NFS....

 

Mine(X-pipe) is inside the Magnaflow 14568............

Dan

 

NFS,


Yes you are correct in saying, just welding two pieces to form an x is a marketing deal. Some systems are just that. There are however, some on the market that have done reseach to at least what my application is and will be. One must do their homework on any added aftermarket part. Marketing does play a big role in selling stuff that is not needed. As I said, do your reseach and get what works for you.

 

Agreed!

 

I use a Dr.Gas X crossover in 3 inch and I can say it works I thought I felt a miss when one of the collector gaskets was bad started pulling coil connectors then gave up and decided to fix the exhaust leak then go back to the 'miss'well after I fixed the exhaust it fixed itself was the leak at the collector that fooled me.

I have posted this before but here it is again.Stan

 

Stan, I didn't know you had IRS. Cool!

 

OH yes I have had it for about 1 year,just got it working PRETTY close to the way I need it.BIG difference than the solid.Plus I can run any gear that an 8.8 has but I have to modify the diff to work in the housing correctly which was not to bad once I figured out how everything worked.
OH as for the sound of that exhaust with the JDM headers and hi flow cats it sounds like a motorcycle on steriods.A sound all by itself.But the big draw back to the system is it is a PITA major to get equal lenght runners on.But I feel it is well worth the headache it caused me when I was fab'ing it up and tig welding it.OH and now it is all coated,too Stan