User 42426

iTrader: (29)

Hey guys,

I was wondering if anyone has modified the h pipe so it is an actual true dual; eliminated the bar that joins the two pipes together in the h pipe. I wanted to know if anyone has done this, and how this would affect the exhaust in terms of sound/flow/w e would occur if this were done. I know a member with greddy evo 2 modified his so its a real true dual. Please let me know, thanks.

aloh

iTrader: (26)

Why would you want to remove the H pipe?

27Z

Eliminating the H-pipe doesn't initially make it a "true dual" as a true dual system has a X-Pipe or H-pipe to balance out the flows of the exhaust which in turn balances out the sound also.

Jeff92se

iTrader: (4)

Um that would be like the worst thing you can do. The H and X pipes in these systems HELP performance by allowing the pulses from one side pull the exhaust from the other.

nismomike

iTrader: (9)

would implementing this to the HKS or even an X02 exhaust be possible? I know they make the magnaflow muffler that people recommend, but like the ARK exhaust does, will this work? :
http://www.magnaflow.com/02product/s...e=main&id=8897

Its a 2.25 inch. They make a 2.5 inch as well, but just lookin for insights on tis! Thanks! Sorry for hijacking your thread OP, but I had a similar concern about the same idea you are proposing.

flecko28

iTrader: (13)

The H and the X are there to help flow, extract exhaust, and generally result in HP and TQ gains (even if minimal in some applications)

As for sound, not good if you remove the H or X. As someone put it to me once, "it's like having two 3-cylinder engines fighting each other"

davidv

iTrader: (2)

Is not "real true" redundant?

lovemyVQ

iTrader: (1)

You're exactly right.

User 42426

iTrader: (29)

alright, first of all, i never said i want to ELIMINATE the h pipe. I said I want to do something about the thing that connects the two pipes together, making each piping flow directly from the cats to the muffler, instead of mixing around through that rod. Basically if you have an H, i want to know what effect it would have if I did this: l l. Get it? If that is considered eliminating the whole h pipe like everyone says, then fine.

And nismo mike, yes you can weld the x pipe into the h pipe of the hks or x02. Just search around, there are numerous threads. And my question does not have anything to do with installing an x pipe.

User 42426

iTrader: (29)

The reason I said real true dual is because the hks is considered a true dual, even though it has a h pipe, which isnt truly a true dual, since the piping is connected.

lovemyVQ

iTrader: (1)

First and foremost, real true is the end result of the same exact words not being separated apart from each other. Otherwise known as a redundancy. Sorry, I was reading Brain Droppings before I read this. I get what you're saying though.

davidv

iTrader: (2)

Yes I understand your question. The function of a X or H-pipe is to equalise exhaust volume and velocity on both sides. Does this equate to improved performance? I do not know.

Ruthless18x

iTrader: (59)

Seems pointless. There is no power hiding in cheap n/a mods. Spend the money on a set of cams, instead of fooling around with this.

Jeff92se

iTrader: (4)

Again, the worst thing you can do for performance and sound.

kramykram

iTrader: (135)

Putting an hks exhaust on your car is bad enough, don't mess it up by doing that.

User 42426

iTrader: (29)

^^ puahaha yea I got cha sir. Btw, ive been meaning to ask you something. I know you have the agency single right now, but you said that the aam single is your fav sounding exhaust? Could you explain why you think the aam sounds better than agency even though you have the agency right now? Thanks.

dr.avrit

When people talk about "true dual" they mean there are two pipes that transverse the entire length of the car. The exhaust system that the older f-body's ran was not a "true dual" exhaust because the two exhaust pipes off the headers merged into a single pipe for much of the length before separating into two outlets on the rear of the car.
As far as merge pipes go, the purpose of the crossover is to keep exhaust backpressure as low as possible by allowing the pressure to equalize between the pipes during exhaust pulses, as well as some scavaging effect that the alternating pulses provide. If you google merge pipes, h-pipe, or x-pipe there is a wealth of information out there about the differences and benefits.

BoomerZ33

iTrader: (23)

+1

OP, i'm sure the people who created and welded the H pipe know alot about exhaust flow and about maximizing HP gains using their design. To custom modify it would be a waste of time imo and should be used to build your motor or something. You're probably better off with a single exhaust

kramykram

iTrader: (135)

lol please tell me when i have said this. Unless you have read older post when I first put on my old aam. i have stated numerous times i do like the way the aam sounds, just like the greedy tic. But agency power is here to stay.