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-   -   Dynatech Insert Cones (https://www.rx7club.com/single-turbo-rx-7s-23/dynatech-insert-cones-594408/)

luiml73 11-07-06 12:50 AM

Dynatech Insert Cones
 
I just Installed a dynomax bullet presilencer, and a magnaflow muffler for my 3" exhaust. Even though it made things a little quieter and sounds deep, Its still a bit too loud for me.

I'm wodering if anyone here is using a one of these?

http://www.jegs.com/webapp/wcs/store...tegoryId=19855

I guess my other option would be the Apexi ATS, but I'm not sure If I can use it with my Magnaflow muffler.

Thanks

Luis

RETed 11-07-06 03:23 AM

We tried to use one on our 20B FC, and it didn't do jack shit.
We were lucky if we got -1dB drop. :(


-Ted

fastrotaries 11-07-06 07:48 AM

I run a Borla XR1 race muffler and an Apex'i N1. The borla where the cat normally goes. It's not stock quiet, but the quietest I've seen. that is until the wastegate opens.

luiml73 11-07-06 08:34 AM


Originally Posted by RETed
We tried to use one on our 20B FC, and it didn't do jack shit.
We were lucky if we got -1dB drop. :(


-Ted

Not what I wanted to hear.

Is it it still N/A, or did you add the turbo already?

Edit: Just went to your website.

luiml73 11-07-06 09:13 AM

The smallest I've seen the Apexi ATS is (87mm = 3.42 Inches)

http://www.horsepowerfreaks.com/sale...ncers/part/ATS

dvls-7 11-07-06 04:14 PM

whats the problem Luis...don't want to be heard before being seen...:D

luiml73 11-07-06 05:53 PM


Originally Posted by dvls-7
whats the problem Luis...don't want to be heard before being seen...:D


Nope!! too many cops around, and I don't want to bring any attention. I guess I'll just install 3 of those cones:D

fastrotaries 11-07-06 06:43 PM

why not justgo with two full blown race mufflers. Apex'i are barely mufflers.

The Griffin 11-07-06 10:52 PM

I'd dump the bullet and pick up another magnaflow (14x9 or 16x9)"oval" as your presilencer.That will quiet your car down much more and make a world of difference compared to the dynomax bullet.

atihun 11-08-06 01:28 PM

Have you taken a look at the Car Chemistry Insert:

http://www.carchemistry.com/shop/ima..._2DI02R_tn.gif

http://www.carchemistry.com/shop/ind.../id/1/subid/7/

I may be getting one of these if my setup is too loud. :D

GoodfellaFD3S 11-08-06 03:37 PM


Originally Posted by atihun
Have you taken a look at the Car Chemistry Insert:

http://www.carchemistry.com/shop/ima..._2DI02R_tn.gif

http://www.carchemistry.com/shop/ind.../id/1/subid/7/

I may be getting one of these if my setup is too loud. :D

That looks pretty interesting Attila. it appears that the insert is welded inside a pipe or muffler in either the center or rear section of the exhaust. According to their data (on an n/a v8) it actually helped make rwhp and rwt, but I had a hard time understanding the decibel decrease benefits from the data they provided.

atihun 11-08-06 04:23 PM

I don't think it needs to be welded in... maybe?

As for the decibal changes, unfortunately, they did not take measurements of the muffler body without the packing for comparison.

But it does show that a hollow muffler (muffler body) kind of like a straight pipe, with the insert shows similar db levels as the standard mufflers.

Seems to be promising; I will ask them if they can make a special one that has a flange that works with our exhaust (2 hole type) instead of the 3 hole type they have on their site. That way you could just unbolt your exhaust after the midpipe/cat, slip it in and bolt it back up.


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