This is how I understood it as well.
I may be wrong here, but my understanding of the difference between the H and X-pipes was that the H was a little quieter, but the X-pipe was a little more efficient with this affect.

 

I don't know which is quieter. The X pipe should have noise canceling abilities because the sound is being thrown against each other.

But with the X pipe, you have the option of using a resonated X like magnaflow offers along with the traditional "X" that you are thinking of. Whether or not a resonated X is quieter than a H alone? Don't know.

 

From what i read, somewhere, the X is more efficient, but has higher probability of rasp, while H pipe is not as good as the X, but tends to have a deeper exhaust note, no idea.

 

u think the H is deeper then having no X/H/Y?

i drove it around yesterday, and i like it (w/o any interconnection between the pipes) its deep, not rasspy a lil louder.

seems like the engine breathes much better...
the way i see it, could be wrong, we have 2 throttle bodies, air flows in each side of the engine, then the exhaust is flowing out of a single pipe, with all stock parts.

someone said its like having two 3 cylinder engines... so shouldn't this make more power? there is enough resistance in the flow to control back pressure.

when i turned it on this morning, and when u can see the smoke coming out, it seemed to be pretty equal, reved the engine to see and it seems to be good.

i can feel the power, get up n' go.

i wish i could find out with a dyno.

oh well either way i can have it fixed.

 

Saw this on the Flowmaster site:

Do I need to install an "H" pipe in my dual exhaust system?

Flowmaster strongly recommends using a crossover tube, otherwise known as an "H" pipe or balance pipe on all true dual exhaust systems. The crossover pipe equalizes the exhaust pulses and allows the sounds waves to communicate between both banks of the engine. Not only does this usually improve torque in the low to mid rpm range, it also creates a deeper mellower tone both inside and outside of the vehicle and helps eliminate "back-rap" on deceleration.

Is an "X" pipe better than and "H" pipe?

Over the years, Flowmaster has performed extensive testing of all types of crossovers and “X” pipes, and has revealed no substantial benefits of one over the other in street applications. We have experienced that some specialized race applications such as small cubic inch engines and /or restricted (small bore) carburetors, will respond well to the addition of an “X” pipe over an “H” pipe.

 

Interesting... i guess i should have that l-l put on.


thanks for all the info guys

 

Interesting stuff!

 

http://www.streetdirectory.com/trave...ore_power.html

 

So everybody pretty much seems to be in agreement that getting rid of the stock y pipe would be beneficial. Is there a bolt on available? I looked though some of the threads and didn't see anything listed. Maybe FI could sell just the X pipe portion of their exhaust?

 

Yeah, the stock pipe is designed to reduce noise more than anything i guess, i think y pipes give the most low down torque as well. I don't think FI would just sell the X portion because you need the rest of their exhaust kit or it won't connect to the mufflers, you could just buy the magnaflow X they use and get a mufflershop to put it in for you.

 

That's what I figured. Got a part number?

 

Nope, not as of right now hahaha I'm at the library, if i find it i'll let you know.

 

after doing some research, I say this might be a good idea. I'm reading that the H pipe is actually turning out to be better for low end and the X excells in the high end. Depends on what you are looking for.

But for the cost, it certainly cheaper/easier to try this first. Then go to a X if one doesn't like the result.

 

14385

 

I just ordered mine.