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Guest Message by DevFuse
 

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Holy rumbly exhaust, batman!


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17 replies to this topic

#1 fastenova

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Posted 28 April 2006 - 03:53 PM

I got my exhaust finished up yesterday on my ea81. 2" from the heads down to a 2.5" merge, then 2.25 all the way back to a high flow muffler with a downturned tip just at the rear bumper. I wanted slightly smaller pipe at the heads, but the guy didn't have any 1.75" so he just went with 2".

I brought him the muffler I had picked up at a local speed shop for $35, and paid another $160 for the custom y, extra bent pipe and labor.

It sounds AMAZING! It's got a nice low throaty rumble that's not loud at all up to about 3500-4000, then it's more noticeable. But at WOT anywhere above 2K, it just gets super low and is pretty loud. Sounds mean. I'll post a sound clip later if I get the chance. Good amount more low end than my leaky stock exhaust, and definitely a little more pull up high. Plus it doesn't sound like the car's about to explode:burnout:

Thanks for the suggestions.

Aaron

#2 Jerry DeMoss

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Posted 28 April 2006 - 04:11 PM

That sounds pretty cool.I am definately interested in the "Y" pipe you had made.I would like to see it.

#3 fastenova

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Posted 28 April 2006 - 04:18 PM

I'll get pics too. I can't tell you who did it as it is technically illegal in OR to replace a cat'd exhaust with a catless one, but the guy was nice enough to turn a blind eye as long as I did the same.

It came out looking nice and follows the same path as the original, totally. Hangars are in the same spot and he kept the flange right after the Y as well.

#4 TheYeti

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Posted 28 April 2006 - 04:22 PM

"yay" for the unequal length header! :)

I love that sound.

#5 dragonfire

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Posted 28 April 2006 - 04:55 PM

oh yeah man. i would love to see what you had done to your car. i am in the process of designing my own. i would like to get some ideas to play with my own. looking forward to hearing that sweet sound.

#6 Jpitty

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Posted 28 April 2006 - 08:13 PM

I did somethin like that, but i have 2 inch straight pipe from the heads back on both sides, it sounds awesome but mine is too loud. yours probably sounds freakin amazing.

#7 bratsrus1

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Posted 28 April 2006 - 11:30 PM

Hey Aaron This is Jerry, if you were at the show you would have seen my 86 hatch with the side pipes that i made for it. This hatch dosen't sound like any other subaru. I drove in town today and with all the buildings wow dose this little hatch make a rumble. Everybody is looking around for the hot rod car and all they see is me and my hatch. Thanks Jerry

#8 fastenova

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Posted 29 April 2006 - 10:45 PM

So got some pics, I will post audio tonight or tomorrow.

Posted Image

Posted Image

Posted Image

#9 manxsta

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Posted 30 April 2006 - 01:27 AM

I got the same set up on my rx wagon..but now its n/a and still sounds like a badass wrx...cheers

#10 Phizinza

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Posted 30 April 2006 - 01:52 AM

Not keen on the joining of the pipes. Flow would suffer. But they do sound nice huh.. ? :D

#11 fastenova

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Posted 30 April 2006 - 03:34 AM

Not keen on the joining of the pipes. Flow would suffer. But they do sound nice huh.. ? :D


Do you mean because they T instead of Y? Yeah, wasn't EXACTLY what I wanted but I got a good deal (I think?!) and isn't that big of a deal to me. This isn't a race car ;) But it does the job and sounds pretty good.

#12 Skip

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Posted 30 April 2006 - 07:55 AM

Here is my version, the twin "seat of pants"
work as a "X" system for balancing the exhaust
extraction
Posted Image

#13 Zefy

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Posted 30 April 2006 - 03:24 PM

that looks pretty sweet... nice and tucked up... i can't wait to finish mine...

mine is half done...

Posted Image

kitty comfort box not included...:-p




#14 Phizinza

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Posted 01 May 2006 - 12:38 AM

Here is my version, the twin "seat of pants"
work as a "X" system for balancing the exhaust
extraction
Posted Image

Looks clean, But why do you need the balancing system? What will happen if you just run two pipes all the way?

#15 Skip

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Posted 01 May 2006 - 03:23 AM

The "balance tube" or "X" factor
helps somewhat with savenging and thus some
help in the anti reversion department.

Another way to think about it is
the exhaust pulses now have two paths they can follow and thus decrease the back pressure somewhat
while promoting pulling the next pulse along.

I believe it also improves the exhaust note.

Good read here if you like
Understanding Exhaust

#16 fastenova

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Posted 01 May 2006 - 11:33 AM

Skip, that looks great! Do you have a shot from the rear of the car?

Aaron

#17 Skip

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Posted 02 May 2006 - 03:25 AM

Thanks Fast
The rumble it produces is somewhat "V8" ish

I'll get ya a shot of the rear.
Here is the J pipe connection.
Note the X connection also matches where the tranny
cross over is - keeping the system snugged up against the body
I will add
the old hot rodders tip is to place the X
at a point where if the head pipes were painted with
normal paint -- the paint would not burn off.
Posted Image

#18 Skip

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Posted 29 May 2006 - 08:39 PM

And rumble they do!!

sorry for the delay Fast

but here's a rear view of the pipes
See my post "These things can't haul...."
for the rear cross over view
Posted Image




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