Advantage of factory twin exhaust?

[icy]

Can someone plz explain whats the advantage of having twin exhaust ie. ae101 and some late model hondas.

thx in advance

[Bling]

looks phat.

[barryogen]

on the AE101 it means that you can have a fairly restrictive muffler on the end meaning that it would be quiet until you give it hell, and it opens the flap/valve to the other muffler to increase the flow...

that and it looks phat...

[~SlideWays~]

on the AE101 it means that you can have a fairly restrictive muffler on the end meaning that it would be quiet until you give it hell, and it opens the flap/valve to the other muffler to increase the flow...

that and it looks phat...

Really? I never notice an exhaust note difference in the gf's car. But with the car idling on a cold morning you can see fumes/steam coming from only one of the silencers. I just assumed that the flow just went through the easiest path...

Having a look under it and the Y-piece is a bit hideous! You sure there's a flappy jobbie?

[rolla_fxgt]

on the AE101 it means that you can have a fairly restrictive muffler on the end meaning that it would be quiet until you give it hell, and it opens the flap/valve to the other muffler to increase the flow...

that and it looks phat...

Really? I never notice an exhaust note difference in the gf's car. But with the car idling on a cold morning you can see fumes/steam coming from only one of the silencers. I just assumed that the flow just went through the easiest path...

Having a look under it and the Y-piece is a bit hideous! You sure there's a flappy jobbie?

Yup if you get the revs just right & then suddenly back off you can hear it closing, it kinda sounds like a poping sound.
I guess it all works on flow & at a certain resistance it opens the flap & goes out both

[barryogen]

Having a look under it and the Y-piece is a bit hideous! :lol: You sure there's a flappy jobbie?

I believe that the flappy bit is spring loaded and is inside the secondary muffler.

Revhead can probably explain it better.

[icy]

Wow, you do learn things when asking the right question, very interesting to know, I have always thought its more of a look thing but when late model accords, golf R32 and Mazda 6 starts introducing them on their cars I start to wonder whats the reason.

My car (ae101 levin) does sound quiet when its idling, got over the loud exhaust thing, I am more appreciated with the sound of the engine more now.

[Pelo]

twin mufflers seem to be the trend at the mo. It used to be sports and supercars only now all the family cars have them. Why, it is just extra weight to look good???
Aurion camry 6 commodore accord legacy bmws and many more...

[Quirky]

it just looks phat...

[sergei]

I have not seen any flaps in AE101 exhaust, is it inside of the muffler?

[touge rolla]

well they just make sense in the case of a longitudinal "V" configured engine. Incase of MR2 i guess it's just to make it look good (and damn it works go symmetry!)

[barryogen]

I have not seen any flaps in AE101 exhaust, is it inside of the muffler?

I believe that the flappy bit is spring loaded and is inside the secondary muffler.

Revhead can probably explain it better.

[neo]

You sure about the flappy thing..

I do know the left one has a smaller diameter pipe though the middle of the muffler than the right, but by no means are they restrictive at all as the pipes are perforated and go 'straight' through the mufflers.

.. and its because they look good, and this way you can double the amount of baffling

[Mr Revhead]

i used to think there was possibly a valve in there
but a few ppl have cut the pipe off and havnt seen a flap

but they definitly do favour one side when idling/slow running
i would be interesed to see inside a muffler, as theres def something doing it!

[sergei]

Yeah, that was my point, I have not seen a flap inside the AE101 muffler. I also know someone who used smaller AE101 muffler on his AE92 and it was definitely running normal.

[AceSniper]

are they straight through? I didnt think they were... way to quiet for that.
From what iv read on jap sites the ae111 muffler has a flat init that alows more flow dono if thats true

[neo]

My memory may be playing tricks on me, but I remember poking a wire through the right muffler at least end - end.

They are straight through, but the dia of each pipe isnt massive... not compared to the factory 2 1/4 - 2 1/2 main section and center muffler and cat.