Muffler with silencer

[nissky]

Anyone have those trick mufflers that come with a removable silencer?

Im interested to know peoples experiences with them, how

effective and easy to use....

I have been wanting an adjustable exhaust for ages

The other option is getting another less restrictive (loud) muffler made up which matches the existing flange, but this would require

undoing three bolts every time.

[T0nyGTSt]

"Adjustable" exhausts are illegal. They need to be welded shut.

Mine has a central removeable silencer (one bolt holds it in).

It's not bad with it in, bit droney though. And it whistles/screams as you hit it.

With it out, you can't hold a conversation, listen to the radio.

T.

[randymoss]

yeah I've got one as well. Fits into my cannon muffler to reduce the noise. Without it its impossibly loud to drive. Though the car actually sounds quite good when you floor it, it is abit restrictive but on the flipside without it I think it would attract too much attention from the wrong ppl.

[aybee]

whats the point of driving around with a silencer in a loud exhaust? if you want loud get a big exhaust if you dont then dont get a big exhaust, its not rocket science. or just get another resonator put in (thats assuming you already have one).

[Demon Dave]

My car came with a Kakimoto exhaust already fitted. It has a removable baffle (one bolt holds it in place).

Most of the time I keep it in - without it the car is a little too loud (especially considering how close I live to the local cop station!)

Still, I think it is a great idea - you can have mean/loud for trackdays and stuff and quiet for the long runs...

[nissky]

isnt it obvious, your right its not rocket science :shake:

so i can have both!!!

cause i dont need bacon aggravation during the week, but want to hear the sound bouncing off tunnel walls on the weekend

think ill just get a new muffler thats stays just under 90db

[aybee]

a resonator is going to be less restrictive than a silencer therefore better for your turbo and you can still give it a decent go with it in, then for track days screw in the original piece and there you have it.

[aybee]

better yet, ive heard rumours of a place in sydney that has made a power adjustable silencer that goes somewhere between the cat and muffler and can be flicked between silenced and open from the cabin. very good idea. i want one!

[rs73]

how good is that butterfly exhaust valve ? anyone ever use it ?

Apexi made one I suppose. dunno if it really disrupts the flow a lot

[int21h]

My friend has an APEXI exhaust on his R33. It has one mutha ***a of a large muffler tip.

It has the butterfly in the exhaust and you can pull it or push it, to make it louder or quieter.

Once you pull it to make it quieter, it is signifficantly quieter but you also loose power. I don't think it even comes on boost.

Its a good idea now, because the cops are trying to crack down on exhaust noise here. Doing stops on thursday nights

[aybee]

Like I said... I want one!

[rs73]

Get the exhaust valve controller here:

http://www.takakaira.com/performance/apex/...p?index=exhaust

[dAVE]

you mean one of these?

i can get them but think its something like $250.

dave

[dAVE]

THere you go - u can get them from takakaira.com

ECV N-Type A Skyline 93.8~98.4 ECR33 67mm ¥14800

US$126.

So about 200 + postage.

here is the description:

"APEXi produces state of the art, high performance exhausts which are known for quality, and deep aggresive exhaust tone.The new APEXi Exhaust Control Valve (ECV) controls the amount of exhaust flow from the exhaust muffler (especially the APEXi N1 exhaust muffler), and thus varies the loudness of the exhaust volume.The ECV is installed after the catalytic converter in a vehicle's exhaust system. It can easily reduces the exhaust loudness level by a maximum of 10dB by varying the butterfly valve in the ECV. With the ECV, one can now maximizes a high performance car potential with APEXi's range of high performance exhaust system; be it driving in urban areas, at night, or in areas with strict sound emission laws, just by varying the butterfly valve opening in the ECV. All these adjustments can be done in the ****pit via fly by wire controls of the ECV.The butterfly valve can be controlled in real time while driving either with the valve in fully opened, fully closed, or partially opened position.Before the invention of APEXi ECV, exhaust sound levels are control by using different inner silencers in an exhaust muffler.These inner silencers require vehicle down time to install, dismantle, and re-install to achieve similar performance levels of the ECV. Such changes also requires the exhaust to cool down in order not to burn the hands of the installer.The ECV replaces the connecting flange on the piping (after the catalytic converter) that connects to the catalytic converter.The wire that controls the butterfly valve on the ECV will run via the heat sensor cabling (as in NISSAN vehicles) and through an opening from the vehicle's under carriage to the interior of the vehicle where it will terminates at the valve control lever switch in the ****pit where it is within reach of the driver. Minor drilling & modification on exhaust piping after the catalytic converter might be required on other vehicle makes (e.g. TOYOTA vehicles)."

[dAVE]

Originally posted by rs73

Get the exhaust valve controller here:

http://www.takakaira.com/performance/apex/...p?index=exhaust

haha, feel retarded now.. i didnt refresh before I posted :S

[nissky]

Here it is...i think its cost a bit too much though...

http://autospeed.com/shop/category_1765/browse.html

Anyway i dont need, took my non straight through rusted muffler

off today...

with the 3inch turbo back exhaust with just cat and resonator

attached it wasnt as loud as i thought it would be so should be still relatively quiet with new straight through muffler