Old'75'Owner

Looking to buy a used Ti exhaust cat-back and would like to know is there any reason to include the OEM Z06 x/h-pipe? I very seldom see the OEM x/h-pipe included in a Ti exhaust for sale. Thanks

John C

Mr.Bill

First off you don't want to trade out an H pipe for an H pipe, You want an X pipe, I installed an X pipe on my TI and it ran smoother and sounded better.

papafrancisco

That's an idea. I am lookingf for a little sweeter sound above my stock exhaust. The X pipe just may put me there without changing my catbacks. Thanks for the idea.

madmatt9471

No not at all, you have the same stock H-Pipe and there is no need -

As stated above get the TI's and an X-Pipe and it will be a world of a difference

Thanks,Matt

c5vetteguy

Throw on some free-flow cats, too, and you'll realize how constipated your current exhaust really is.

Dark-Knight

'X' and Hi flo cats are the way to go. Throw in a set of long Tubes and you are done!

Had Ti's, great improvement over stock. Changed to Magnaflow for that deep big-block sound. Check sig for more info...

Vetteman Jack

The X-pipe will smooth out the flow a bit better and give a deeper sound to the exhaust.

jrose7004

Don't mess with changing a H pipe for another H pipe.

George Hubert

Swapped my stock exhaust for a magnaflow and a bassani X pipe. Hated the drone and swapped the magnaflow for stock exhaust. No drone but when you hit the loud pedal it sounds great, The stock H pipe restricts flow the X pipe opens the way for the exhaust to leave. I then added a blackwing and am happy. The Vette is quiet when I want itd and roars when it needs to.

Old'75'Owner

Thanks for the input, will buy an X-pipe to go with the Ti's.

chasboy

I don't understand the deal with the X pipes. I've looked at them in pix, and I don't see how the design is that much different than the H. Someone explain??

mcm95403

An h-pipe is supposed to be a crossover in a dual system used to help "balance" the pulsing found in an exhaust system. They can also reduce interior drone at certain harmonic points. On the old 5.0 Mustangs for example, a 1 3/4" diameter crossover added to the stock h-pipe 21" back from the drivers side header flange took a good 80% of the resonance out when using 2 chamber Flowmasters.

A "correct" x-pipe improves on the pulse balancing by completely merging the flow of the two halves of the exhaust system.

The stock crossover on our cars is a joke. It's 2 1/2" just like the main tubes, but each one of those tubes has just one small hole leading into that crossover. The holes are about 5/8". This is not uncommon in GM exhaust systems.

When I say "correct" x-pipe, I mean one that is really shaped like an X, not a "merge":

Good:



Merge style:

chasboy

When I say "correct" x-pipe, I mean one that is really shaped like an X, not a "merge":


THAT is exactly what I wanted to know! Thank you!!!
Some of the Xpipes I've seen online look like the merge example, where I was unsure if the pipes even opened to each other. The 'good' one shows how they should (I assume) be siamesed.
So, Is a good X pipe a smart investment? What's the effect if that is the only thing one changes? I like the sound of my Z's stock system now.

itzza427

For what it's worth,,,there was a post some time back that was posted by a race shop that did extensive testing on dyno and track that stated that the "merge type X was actually better than the cross over X's. Both are good,,and WORLDS better than the phony/useless stock H (as you stated only about a half inch hole in the side of the main tubes at the H). Just thought I'd pass this along,,not trying to start a ruckus. Either will be a major improvement!!

George Hubert

look at a bassani X pipe

m6 c5

I tend to agree with you also as if you look at the "correct" x pipe the exhaust gasses are going to collide at certain points where as with the merge style they are allowed to just follow along the same path with minimal disturbance. Also Im not aware of any headers that come with the "correct" x pipe, I always see them with the merge style; that right there says something to me.