[Martinez1708]

I know there are a bunch of thread on mufflers and want not but after doing a search and finding out what every has and what brands they recomend i still have a few questions.

What are the pro's and con's of the three types of dual systems

True dual (no H/X pipe, just independant tubes for each side)
X-Piped
H-Piped
Y-Pipe after the initial Y

Can anyone help me with this? I dont care about brands as of right now there are enough threads to give me that answer. I mainly want to know preformance wise. I keep hearing this backpressure issue which i'm still cloudy on. haha, if you couldn't tell i'm new to the car game.

Thanks in Advanced

[dab1990]

im sure you've heard this before but

X pipe = more power in high rpms, along with higher pitched sound

H pipe = more torque(suposedly), along with deeper tone

Strait Pipe = i have no idea but i dont see many people go that route.

thats just what i've read and heard on clips, i dont have duals yet either.
and im sure someone else will chime in with more usefull info.

[Jshem746]

lets say u do either one of those and u dont wanna cut out a valance for the additional ppe. could u just buy a GT rear bumper???

[stlwagon]

Originally Posted by Jshem746

lets say u do either one of those and u dont wanna cut out a valance for the additional ppe. could u just buy a GT rear bumper???

GT takeoff bumpers are cheap and plentiful.

[Hoodlum]

Originally Posted by Martinez1708

I know there are a bunch of thread on mufflers and want not but after doing a search and finding out what every has and what brands they recomend i still have a few questions.

What are the pro's and con's of the three types of dual systems

True dual (no H/X pipe, just independant tubes for each side)
X-Piped
H-Piped
Y-Pipe after the initial Y

Can anyone help me with this? I dont care about brands as of right now there are enough threads to give me that answer. I mainly want to know preformance wise. I keep hearing this backpressure issue which i'm still cloudy on. haha, if you couldn't tell i'm new to the car game.

Thanks in Advanced

True dual will lessen the back pressure and probably cause horsepower loss.

Xpipe would be good for cars that have high horsepower or forced induction because it allows the exhaust gases to escape faster they generally dont sound good on stock or close to stock v6's

Hpipe sounds better, works well will with keeping back pressure in a range that helps the flow of exhuast gases escape.

Ypipe is pretty much the same thing as the Hpipe but is cheaper due to less piping and you wont get the deep Hpipe bubble sound because there is no cross over in the midpipe region.

The whole back pressure issue goes something like this: Back pressure will help "scavenge" or "extract" the exhaust gasses out of the cylinder when the exhaust valves open up.

[SOHCman]

Originally Posted by Hoodlum

True dual will lessen the back pressure and probably cause horsepower loss.

No HP loss. Torqu loss of a few pounds. No big deal. The added mid-high RPM performance gain, sound and added MPG, totally outweigh any negatives.

Originally Posted by Hoodlum

Xpipe would be good for cars that have high horsepower or forced induction because it allows the exhaust gases to escape faster they generally dont sound good on stock or close to stock v6's

"X" is what FORD designed for the V6. Just works best at higher RPMs.

Originally Posted by Hoodlum

Hpipe sounds better, works well will with keeping back pressure in a range that helps the flow of exhuast gases escape.

Never actually heard any "H" pipe V6s.

Originally Posted by Hoodlum

Ypipe is pretty much the same thing as the Hpipe but is cheaper due to less piping and you wont get the deep Hpipe bubble sound because there is no cross over in the midpipe region.

Don't even bother with this setup.

Originally Posted by Hoodlum

The whole back pressure issue goes something like this: Back pressure will help "scavenge" or "extract" the exhaust gasses out of the cylinder when the exhaust valves open up.

Scavenging is only for very high-performance engines that are specifically tuned. A 4.0 V6 doesn't have enough flow to create the high volume numbers for "scavenging". We're talking race motors here folks, not our daily drivers.

Nice term, very overused.

My 2 cents.

SOHC

[mrjimmy]

I have the H pipe on my car with JBA shorty's and GT mufflers. I like the looks of the duals,with the GT bumper cover. The sound is terrific at all speeds,I can hear the radio and the passengers talk,No significant change in MPG and the performance is better,of course I have a CAI with a 91 octane tune.Planning FI in the future.
I dont know why I chose brand H over brand X or Y but as satisfied as I am with the current set up I dont think I'd change the pipes....

[SOHCman]

Originally Posted by mrjimmy

I have the H pipe on my car with JBA shorty's and GT mufflers. I like the looks of the duals,with the GT bumper cover. The sound is terrific at all speeds,I can hear the radio and the passengers talk,No significant change in MPG and the performance is better,of course I have a CAI with a 91 octane tune.Planning FI in the future.
I dont know why I chose brand H over brand X or Y but as satisfied as I am with the current set up I dont think I'd change the pipes....

Mr J,

Can you do a video like this one?

SOHCman Pypes Acceleration - Putfile

I'd be interested to hear if there is a noticable difference in sound between H and X.

Shouldn't matter if you are running GT mufflers.

Thanks
SOHC

[mrjimmy]

well I am not sure how to do it and I dont have any assistants to help.
watching and listening to this clip it seems like the sounds are identical,,,even the burnout..lol
I have a digital movie cam...but as I said no help in pulling off the video.

Not to many 60 y/o's to hang with here who appreciate anything more than Dancing with the stars

You dont stop playing because your old,,,you get old because you stop playing...

[Martinez1708]

Thanks for the info gentlemen. From what i gather I'm gonna be looking at the true dual or the H-pipe. Also thanks for clearing up the backpressure issue, since my 6pack wont be doing race car numbers i dont have to worry about the backpressure. I assume, true duals will be cheaper than an H pipe. But of the two which has better preformance gains? over all... true duals with give me the low end torque loss, but better mid-high preformance? as apposed to the H which will do what?

[Jshem746]

Originally Posted by stlwagon

GT takeoff bumpers are cheap and plentiful.

could u get me a link???

[Jshem746]

wat brand h pipe kit and header kit do u recommend?

[mrjimmy]

I guess I cheaped out on the H pipe as far as brands go. The installer just took a piece of exhaust pipe,probably 2 1/2 " and fabricated one. measured, contoured ,shaped and welded on. The holes in the exhaust pipe where they were welded together probably wouldnt look as you thought,but do equalize the pressure.The finished product looks good to me.
As far as headers I am kind of partial to the JBA shorty's,ceramic coated. They look good and very easy to install,,,a cave man could do it....in a couple hours

[CrzyHorse]

I got a custom made h pipe with the american thunder exhausts. Sounds AMAZING! I will post a video soon.

[SOHCman]

Originally Posted by mrjimmy

well I am not sure how to do it and I dont have any assistants to help.
watching and listening to this clip it seems like the sounds are identical,,,even the burnout..lol
I have a digital movie cam...but as I said no help in pulling off the video.

Not to many 60 y/o's to hang with here who appreciate anything more than Dancing with the stars

You dont stop playing because your old,,,you get old because you stop playing...

Good quote Mr J,

I remember the quote back in my day "If it's too loud, you're too old".

Well, at 97 dB at cold idle, I'm still running with the young 'ins!

A few of the Stang drivers I hang with were born after I graduated HS.

Sometimes ya feel old regardless...



SOHC