A different kind of exhaust question...

[xjohnx]

Originally Posted by jm1681

Great example Especially with the valve thingy disconnected

On a semi-related note, I don't know if I was hallucinating, but did I see something in an exhaust post here about a lot of flow being trapped in the mid-pipe?

Maybe keep the stock muffler, and just switch to a higher-flowing mid-pipe?

Other way around. Nameless made their own midpipe, tested it and found that it provided no gains over stock. stock midpipe is fine for the most part.

[jm1681]

Originally Posted by xjohnx

Other way around. Nameless made their own midpipe, tested it and found that it provided no gains over stock. stock midpipe is fine for the most part.

Crap >.< Never mind then

I don't know what to do I know that when I switched up to a flowmaster on my old GTI, I got a higher-pitched sound than was anticipated, but that was such a different engine.

I'm thinking a chambered muffler versus a packed muffler might be a part of the equation, but I can only really try it once before I've wasted money XD

[xjohnx]

Originally Posted by jm1681

Crap >.< Never mind then

I don't know what to do I know that when I switched up to a flowmaster on my old GTI, I got a higher-pitched sound than was anticipated, but that was such a different engine.

I'm thinking a chambered muffler versus a packed muffler might be a part of the equation, but I can only really try it once before I've wasted money XD

Take a look at the Perrin and Nameless systems. They both have a sound that I think you'd like.

[Grateful Dave]

The Evo3 has the best Tone!

[jm1681]

Originally Posted by xjohnx

Take a look at the Perrin and Nameless systems. They both have a sound that I think you'd like.

Just watched/listened to the Perrin front pipe and catback. They definitely sound good, but still not quite there

Not totally crazy about the Nameless setup I'm afraid.

[Yruyur]

I'm looking for the stock sound my 2012 TC had. Throaty good idle and great sound when on it.

Sent from my PH44100 using Tapatalk 2

[Borden]

As far as I know:

Aftermarket commonly used inline mufflers is a low pass filter, which absorb only high freq sound, so it's natural they have those "deep" tone, that's what these kind of exhausts can only get, rather than what vendors "tuned up".

For more higher pitch, i.e. low band silencing, you need one or more large expansion camber, like a stock one, or large branch out helmholtz resonator. Tune up their dimensions/containment can eventually get you the proper pitch.

For some reason, we can seldom seen stock style exhausts in aftermarket, I don't know why either. Maybe it's owner's favor that they seem can't flow that "freely" and looks not so "performance". But IMO, keep the upstream pipes unchanged, exhaust valves can feel NOTHING about what muffler is in use at all.

[jm1681]

Originally Posted by Borden

...For more higher pitch, i.e. low band silencing, you need one or more large expansion camber, like a stock one, or large branch out helmholtz resonator. Tune up their dimensions/containment can eventually get you the proper pitch...

Large expansion chamber, meaning like a long and thin muffler, or, long and wide muffler? I was thinking about replacing the stock resonator with a long and thin Magnaflow, and then doing Nameless's dual-exit track pipe (Whenever that becomes available).

[Borden]

Originally Posted by jm1681

Large expansion chamber, meaning like a long and thin muffler, or, long and wide muffler? I was thinking about replacing the stock resonator with a long and thin Magnaflow, and then doing Nameless's dual-exit track pipe (Whenever that becomes available).

I mean a larger container where the waste gas can expand and slow down. Usually it's a bigger diameter inline hollow pipe(like the stock mid muffler), with no glass fiber stuffed around. Or those stock maze style big can.

Basically, I think the stock maze muffler is the most effective one in low tone cancelling, then a see-through inline expansion camber(stock mid resonator). All see-through "glasspack" are essentially for high pitch cancelling, and can't do too much about the low tone. The key here for low pitch is SLOWDOWN & SMOOTH OUT, no direct shoot out, which is contrary to our instinct for "high flow" or "performance".

The long thin Magnaflow is a glass pack, surely will let more low tone pass through than the stock one. the Nameless muffler, I don't know what's in it

[jm1681]

Ah, I see

Hmmm... How do we feel about Magnaflow 3-chamber mufflers? They can be had long and thin, and have no packing, just chambers and some hole-y internal pipes.

[Borden]

Originally Posted by jm1681

Ah, I see

Hmmm... How do we feel about Magnaflow 3-chamber mufflers? They can be had long and thin, and have no packing, just chambers and some hole-y internal pipes.

That looks like a nice choice if you do care about the low pitch noise and it has some real weight reduction from the stock one. But I've never heard one, you may hear it by yourself before a decision. IMO tail muffler can do little about HP, so weight and tone are the major factors we choose from^__^

[jm1681]

Cool Now just to find a configuration that'll work XD

[BadCompany235]

short and wide expansion chamber will increase the pitch... kinda hard to explain but think of how a lotus sounds compared to a celica or mr2. alot of that sound difference in the total length of exhaust piping, in addition to the shape and flow capability. another reason ferrarri's and lambos sound the way they do compared to maserati or a viper. you can do alot with pressure change and material...it's alot of work tho. look at how complicated the LFA exhaust is compared to some other v10's and you'll see what i mean. or check out a few MR car exhausts.

[jm1681]

Originally Posted by BadCompany235

short and wide expansion chamber will increase the pitch...

That sort of sounds like the plan with the 3-chamber muffler, right? Multiple wide expansion chambers?

Unfortunately, I'm not finding any that have the inlet/outlet configuration that's needed for these cars, but I'm going to keep up the search.

Listening to clips, the Greddy SP Elite seems closest to the sound I'm searching for, so I'm curious what it looks like in that case. If it's a multiple chamber design, that seals the deal for me.