silver02Z

iTrader: (19)

I done a search and came up with nothing so here we go. I'm going with true duals on my 02 Z28 and was wondering how many use X-Pipes and how many H-Pipes. I'm sure that the X-pipe is used more but what are the benifits over the H-Pipe?

I just spoke with a very respectable exhaust shop who has done countless true duals on these cars and he said he's used both H & X with little to no difference between the 2 other than the X is more $. Thanks in advance..

Kevin

OldeSkool

I suspect that an H pipe will be easier/cheaper to come up with as well as provide clearance as the 2 pipes dont have to come together like an x, the crossover can be placed, bent, flattened easily enough to keep everything tucked up well. And then there's that thing about H-pipes being more rumbly

240M3SRT

Whats the point of an H-pipe or the X-pipe? Does it make better power than just true duals?

Ive been into turbo 4 cyl cars too long can someone explain it to me. Thanks.

Hardtop00SS

iTrader: (17)

X pipe - better scavenging, more power, raw exhaust tone
H pipe - less power then X, more refined/mellow exhaust note

It's all in what you want..

OldeSkool

a crossover helps equalize pressure from side to side... still, my favorite exhaust of all time would have to be 4 into 1 cobra side pipes... no crossover whatsoever, still makes good power and sounds plenty nice.

LS1Maniac

Just to elaborate a little on what Hardtop00SS said.

X-pipe: Better scavenging, slightly larger hp increase, little louder exhaust tone, much more complicated and thusly costs more money to make, takes up more space than the H-pipe

H-pipe: Still scavenges but not as well as the X-pipe, slightly less hp increase than the X-pipe, has a deeper/smoother tone, is very simple to make, takes very little space and can fit in spaces the x-pipe can't, cheaper than the X-pipe

Straight pipes: No scavenging, no equalization of pressure between the two sides, less hp than either H or X-pipe, raspier/louder exhaust tone, cheapest of the true duals

I placed them in order of performance. Most people say that H-pipe setups sound better than X-pipes but the X-pipes outperform the H setups. It's all about what you're looking for. If you want the best possible sound go with the H-pipe, if you want the best possible performance go with the X-pipe.

silver02Z

iTrader: (19)

How much HP difference are we talking about between X & H...Is it noticable SOTP?

LS1Maniac

1-5 hp and 1-5 tq max.

Swang

iTrader: (3)

heres how it works on stangs, so im assuming the same is true here.


H pipe- more low end power (torque), "american muscle sound"

X Pipe,- more power uptop (horsepower) "ferarri sounding"

its all in what you want. Remember that HP isnt everything, Torque is more important.

"horsepower sells cars, but torque wins races"-Carroll Shelby

240M3SRT

Every little bit counts sounds like i will be doing an x-pipe. Any good links to get a 3" or so x-pipe ss or mild steel well priced?

Swang

iTrader: (3)

adding to my last post...theres benefits to both, thats why they are both still around, so there is no one that is "better" than the other, its all in what oyu want

V6 Bird

iTrader: (15)

yes its noticeable...the X is far more responsive in the low to midrange.

V6 Bird

iTrader: (15)

to refine your post a little more........usable power wins races.

realmendrivev8s

iTrader: (23)

Does anybody hae a dyno chart or something that shows the difference in tq and hp curves between h and x pipe setups

99Hawk262

iTrader: (19)

I have an H-pipe and I noticed a significant increase in my low and mid-range power. The most noticeable difference was in the top-end, but low and mid-range was definitely increased.

MountainMotor

iTrader: (2)

Yea, I've always thought that the H-pipe gives a bit more low-end and the X-pipe gives a bit more high-end. I personally like the H-pipes better because of the low-end and sound but it's all in personal opinion.

dug

iTrader: (10)

Im skeptical about power increases from xpipes and hpipes. Drag cars just run open headers.

realmendrivev8s

iTrader: (23)

Im leaning more towards a H pipe setup since i think they sound better and i am more worried about low end power.

MadBill

But street cars need mufflers, and unless you have room to stick a couple of big mostly empty boxes like Flowmasters or Spin Techs under the front seat, just where the tuned collector lengths should end, you lose power, especially with a big cam. Dr. Gas, originator of the X-pipe, says the tuned length ends at the crossover hole, but that the energy transferred from one side to the other can make better power over a wider band than open headers and that past the 'X', the pressure pulses are mild and the exhaust sizing requirement is much less.

00SLPSS

iTrader: (15)

I have an H pipe on my car right now and I just ordered my texas-speed true duals with an X.

Once I get that on there I'll let you know the differences. My current setup has bullets and the new one will have sweet thunder mufflers, IDK if that will affect anything other than sound.