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-   -   making the exhaust noise tolerable at WOT and being catless. (https://www.ft86club.com/forums/showthread.php?t=56715)

BRZPDX 01-26-2014 08:43 PM

making the exhaust noise tolerable at WOT and being catless.
 
So with my recent addition of a TC kit/EL header, I have 0 cats in my car. I have the Invidia N1, and is way too loud now at WOT (0% ~ 50% throttle is pretty tame).

Are cats the only way to make everything quieter? Or will adding more resonators help? I have no rasp on my exhaust currently, just way too freaking loud.

Also, I've never had a muffler shop make custom exhausts, but is this a viable route as well?

As far as quiet exhausts go, all i can find is the Q300, stock exhaust, resonated Perrin. They all seem a little raspier compared to the N1's deep bassy tone.

Any suggestions?

SmsAlSuwaidi 01-26-2014 08:56 PM

resonators / mufflers are the way to tone down noise not cats :)

Malt 01-26-2014 09:45 PM

Quote:

Originally Posted by SmsAlSuwaidi (Post 1481576)
resonators / mufflers are the way to tone down noise not cats :)

Resonators tone down rasp, not volume. The solution is to put on a quieter muffler.

shaunsweeney 01-26-2014 10:10 PM

Magnaflow has a nice deep tone and is quiet.

mrk1 01-26-2014 10:25 PM

The size a placement of the muffler is really what controls end volume. Position and size of resonators change the tone, this includes rasp. Now knocking down the rasp and altering the tone can make the end sound seem quieter and less abrasive to the ear with out actually registering lower on say a db meter.

shaunsweeney 01-26-2014 10:32 PM

If you look it seems most of the quiet systems for this platform use a factory style transverse muffler.

mrk1 01-26-2014 10:35 PM

Quote:

Originally Posted by shaunsweeney (Post 1481769)
If you look it seems most of the quiet systems for this platform use a factory style transverse muffler.

Yeah thats one of the only ways to fit a large muffler under these cars. There really isnt much room to play with

shaunsweeney 01-26-2014 10:38 PM

Exactly. The issue with bullet style mufflers is the lack of sound absorbent material that can be packed in them.

s2d4 01-26-2014 11:06 PM

Always upgrade the source end first if sound is your thing.

jflogerzi 01-27-2014 12:24 AM

Try running with the stock front pipe.

mxsled 01-27-2014 12:31 AM

Quote:

Originally Posted by jflogerzi (Post 1482002)
Try running with the stock front pipe.

+1
here my car with catless frontpipe
http://i1127.photobucket.com/albums/...ps74632da1.jpg

here now with the stock frontpipe:
[ame]http://youtu.be/tdx62mHnRB4[/ame]

FT-86 SpeedFactory 01-27-2014 12:40 AM

The header is the main issue. We've seen it time and time again. A catted header is the only way we have found to keep the noise down. Catless header and you are in for some ear bleeding.

s2d4 01-27-2014 01:34 AM

Quote:

Originally Posted by FT-86 SpeedFactory (Post 1482057)
The header is the main issue. We've seen it time and time again. A catted header is the only way we have found to keep the noise down. Catless header and you are in for some ear bleeding.

Ohh boy...

BRZPDX 01-27-2014 01:37 AM

but ideally with FI, you don't want to have any cats correct? Ugh, my buddy has a 1000whp Supra, and my car still sounds louder..


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