Sleeper Exhaust

**B18cEG** · 30-09-2007 10:55 PM

Hi people,

I have nearly finished doing my na build and was wondering if anyone has tips for the following question.

I am going to get a 2.5" mandrel bent exhaust made up and was wondering what is the best way without using Y outlets or electronic control valves to make a super quiet yet high flowing exhaust, so it sounds like a new car (quiet) when cruising but obviously it will get louder with acceleration.

Car: eg hatch
Mods: super aggressive cams & valvetrain, hi comp pistons
Thanks

**vteccoupe** · 30-09-2007 11:12 PM

http://vibrantperformance.com/catalo...ed77e21a941491

the above might b the kinda sleeper style muffler u r looking for...i just ordered one from them

**Zdster** · 30-09-2007 11:33 PM

All of the ones shown in the above link are straight through so are not going to be quite.

For a quieter system look into a twin loop muffler.

**B18cEG** · 30-09-2007 11:36 PM

i was originally thinking of putting a few long resonators in line. anyone tried

**xntrik** · 30-09-2007 11:55 PM

Cant you just get a silencer?

**B18cEG** · 01-10-2007 12:06 AM

Originally Posted by xntrik

Cant you just get a silencer?

In my opinion ther should be a way to do it without ANY devices or anything, there must be a way to make a genuine quiet exhaust.

**vteccoupe** · 01-10-2007 12:55 AM

btw im going 2.5inch as well

2.5inch wif these mufflers wld b deep sounding and not loud..
go listen to some of it
http://s168.photobucket.com/albums/u...t=DSCF1799.flv

the intake sound is louder than exhaust

Originally Posted by B18cEG

In my opinion ther should be a way to do it without ANY devices or anything, there must be a way to make a genuine quiet exhaust.

**Limo** · 01-10-2007 01:09 AM

use a nice and big muffler at the rear end, like magnaflow or lukey. im running a 3" and its abit louder than stock. muffler is like 21" oval one.

**czy_sol87** · 01-10-2007 01:56 AM

Originally Posted by Limo

use a nice and big muffler at the rear end, like magnaflow or lukey. im running a 3" and its abit louder than stock. muffler is like 21" oval one.

good info

**DLO01** · 01-10-2007 07:54 AM

Its a bit of a compromise somtimes between noise and performance.

To not compromise performance, but try to get it as quiet as possible.
Either get a Twin loop or a muffler with a large casing. You could look in to resonators as well.

**B18cEG** · 01-10-2007 09:06 AM

well i have a nice big muffler that i wanna use, i wanted to mount the muffler in the rear bumper, it fits ive tried, so i can get that extra metre of exhaust. thanks for the info but now i ask, if i put like 3 long resonators to make up the straight section of exhaust (even 3" in/out) will this hurt performance?