Moroso Spiral Flow Muffler

INFORMATION Product Reviews
1

For all you custom exhaust ppl . . . USE IT!

I’ve had a hell of a time trying to get my exhaust to NOT sound like a busted azz 2g eclipse. Here was the progression . . .

Ricer Days:
Hayame Fart Can on Stock piping. MEH! lame.

Cheapo Days:
$50 used OBX 4-1 Header which turned out to be a badazz little piece.

Learning More:
2.5" custom exhaust with stock cat and resonator (2.25 ends cut off b/c i was too poor to buy a real one) to a Comptech 2.5" muffler. Meh! Slightly less lame but getting there. Later added a TSX exhaust tip (irrelevant to our conversation.)

Amateur Racing to Current:
Switched to a high flow cat, JDM ITR Header, and added a Vibrant resonator to the system. Not lame until 4k when it STILL sounds like a complete piece of shizzleit.

  • before you flame keep in mind I have in my genius NOT taken the time to bother to ever have looked down teh pipe of a stock resonator. i’m kickign myself for it b/c had i bothered to look I wouldn’t have been in this predicament to begin with. I felt it should stay b/c I’m looking for a quieter sound as I’m doing a lot of driving with it these days. *

TWO DAYS AGO:
Finally decide to pick up the Moroso Spiral Flow Long tube resonator on the suggestion of a friend. Dropping the car off I went to run an errand. My friend took it upon himself to decide that the stock resonator is going in the trash regardless of my returning to protest. Upon returning we look down the stock resonator to discover the piping leading into the baffling doesn’t stop at the baffling like a true straight through design. It continues about an inch into the center of the perforations. Now this is a problem b/c as the increased amount of exhaust gases travel through the resonator they slam into the pocket created by this protrusion. Then they travel backwards and slam into the other side. The “resonating effect” is great for sound deadening and the “economy” of the stock exhaust. However for performance and current setup sound it was HORRIBLE.

The Spiral flow looks like a normal resonator (round). Inside looks like a spiral water slide twisted around a hollow tube. So the exhaust has 2 ways to travel. Straight through, and along the “waterslide”.

This thing is amazing. It’s mostly used on trucks to even out tones, and that is preciesely what it did here.

The exhaust sounds MUCH better than my friends Greddy SP2s, Apexis, And even the RSR. It’s SMOOTH at every point up to 7500rpms where it gets a HAIR raspy.

Butt dynos lie, we all know this, but the overall feel of the car is COMPLETELY different. 4 people drove it after we installed the resonator and immediately noticed the smoothness of the drive.

We will dyno the car here shortly this being the only change since the last run, and we’ll see what the stock resonator was hiding. For now purely from a sound standpoint, this is THE resonator to use for custom exhausts.

My head tech at TDC Motorsports exclaimed “Well, I guess what I’m going to be doing for my new hatch”.

Thanks.

Manny

2

hey manny, been a while. that sounds pretty interesting. i had a hatch over this summer that i put a new exhaust on and the guy that did it for me used something very similar i think with the spiral resonator. it was probably one of the best sounding hondas with a fart can i had heard in a looooong time.

on a side note, I may have to roll down to KC again sometime and see whats going on down there.

3

Great writeup/review Iceman! How much did the resonator run you? Can you give us the exact model you used and what’s your exhaust setup? Piping size, cat, and muffler? So all in all, your custom setup with this resonator sounds much better quieter than the RSR’s SP2’s and stuff?

4

It was about 65 bucks. There is only one model that I am aware of just different sizes for specific applications. As it sits the exhaust is . . .

JDM ITR Header, 2.5" piping, 1 shorty Vibrant resonator, 1 long tube Moroso Spiral Flow, a High flow spun body cat, a Comptech muffler, and a TSX tip. Das it yo. lol.

Quieter than the others? Perhaps. Smoother and cleaner sounding, in my opinion yes (at least the handful i’ve heard in person).

5

sounds awesome. to should try to get a small vid or some sound clips

6

It was about 65 bucks. There is only one model that I am aware of just different sizes for specific applications. As it sits the exhaust is . . .

JDM ITR Header, 2.5" piping, 1 shorty Vibrant resonator, 1 long tube Moroso Spiral Flow, a High flow spun body cat, a Comptech muffler, and a TSX tip. Das it yo. lol.

Wait a minute… so you have TWO resonators running in your setup? A shorty vibrant and a long tube Morosso? Wouldn’t you be better off with running just the Morosso for less weight? I don’t it…

7

meh. i have some creative ideas for dropping some weight off the teg. you have to keep in mind the levels of frustration i’ve had with this exhaust from day one. If I hadn’t done the work my self it would be the single most expensive exhaust in history. sure i could have bought one, but this one is all original so to speak.

8

I too would like to hear/see this. I want to get a new exhaust but am still torn after reading numerous reviews. I personally think a big can muffler is aesthetically pleasing but the sound is annoying as heck.

I have thought about doing a Magnaflow style exhaust but I’m not sold on that idea either. My favorite sound right now comes from the SRT Neons…sad as that may be.

I just want to find a big can with a low rumble through the rpm’s instead of that typical “import” sound.

9

It was about 65 bucks. There is only one model that I am aware of just different sizes for specific applications. As it sits the exhaust is . . .

JDM ITR Header, 2.5" piping, 1 shorty Vibrant resonator, 1 long tube Moroso Spiral Flow, a High flow spun body cat, a Comptech muffler, and a TSX tip. Das it yo. lol.

So basically you have TWO resonators on your custom exhaust system? A shorty vibrant and a Moroso Spiral Flow resonator?

10

yes.

11

Manny! I want to hear it, lets go to lunch sometime. Does it sound better then mine is the question lol. call me FOO

btw this is Alex/G2fanatic

12

So basically you have TWO resonators on your custom exhaust system? A shorty vibrant and a Moroso Spiral Flow resonator?

yes.

By having two resonators inline with the custom exhaust, wouldn’t it create more restriction throughout the whole setup versus having ONE resonator?

Do you know anyone who has only ONE resonator (preferably the Morosso Spiral Flow one) on their car? If so, does it sound like yours or a little bit louder? Reason I ask is because I’m trying to get away with only one resonator to deaden the sound and at the same time make it sound nice and deep…

13

[QUOTE=hybrid90;1799002]By having two resonators inline with the custom exhaust, wouldn’t it create more restriction throughout the whole setup versus having ONE resonator?

Do you know anyone who has only ONE resonator (preferably the Morosso Spiral Flow one) on their car? If so, does it sound like yours or a little bit louder? Reason I ask is because I’m trying to get away with only one resonator to deaden the sound and at the same time make it sound nice and deep…[/QUOTE]

then this one will be enough. the amount of restriction is negligable. being straight through they barely affect restrictions on an exhaust as large as mine is.

and alex ima call you soon yo.