Quiet me down

zx3r_type · Mar 31, 2010

I installed my F2 header yesterday on my 2010, and with my Borla it is insanely loud, and it has the front resonator in it already. I was thinking of adding another muffler somewhere in the system, but I am wondering if anyone has any tips or tricks.

One of the mufflers I was looking at was the Borla ProXS, and adding it to the rear section somehow. I gotta get the car up on the lift sometime this week and measure everything out.

GFXjamie · Mar 31, 2010

still have one stock cat?

the muffler in your borla system will be a straight thru, remove it and replace with something that has a baffle in it. or just realize the sound is just the raw sound of your car breathing and accept that making it less noisey will also reduce any power adding you got with the header

hommie · Mar 31, 2010

A header is really loud on these cars! I would look at add another resonator or getting rid of the header.

zx3r_type · Mar 31, 2010

I had considered changing to an FSWerks stealth exhaust, but from youtube videos, I don't think it is gonna be any better.

Focusing · Mar 31, 2010

zx3r_type said:
I had considered changing to an FSWerks stealth exhaust, but from youtube videos, I don't think it is gonna be any better.

At wot is loud but not insanely loud and at cruising speed is pretty quiet..

06stfocus · Mar 31, 2010

lol u get u to it i have a F2 header with a custom exhaust its freaking loud but at cruising speeds its fine but soon or later im get the stealth exhaust

03JME · Mar 31, 2010

or just get a really good resonator with a good silencer on it. it will make it more grumble but less noise at high rpm. not totally sure so check with some of these guys they will let you know for sure.

Mabolzichjjl · Mar 31, 2010

just add a glass pack to the straight pipe

03JME · Mar 31, 2010

yea but if he has no cat and a muffler and resonator. all he should need is to put a cat on yea? or a silencer.

Mabolzichjjl · Mar 31, 2010

sorry, i misread, i say replace the resonator with another glass pack. if needed you could prolly put a silencer on the end there is you didnt mind your exhaust angling slightly outward.

epwolfram · Mar 31, 2010

My understanding is that a resonator will attenuate low frequency noise (like the drone at hwy speeds) and a glasspack will absorb high frequency sounds (like the harsh, brittle, ricey, raspy sounds).

If I'm wrong about this someone please correct me, but I think you need a glasspack (or similar), not a resonator. I believe that the FS Stealth Kit adds an extra glasspack.

Mabolzichjjl · Mar 31, 2010

you're correct.

Chexmixa · Apr 1, 2010

i just ordered my f2 header, i have a catback exhaust with 2 mufflers in it. so it sounds like its going to be insanely loud then? what about with the FSwerks stealth exhaust does anyone have any sound clips?

Cameroon · Apr 1, 2010

Sound clips rarely help with how "loud" an exhaust will actually be.

From first and second hand experience. The FSWerks Stealth exhaust, with a race header is roughly as loud as a non-stealth exhaust without a header.

The stealth without a header is nearly as quiet as stock. Better tone but not loud at all.

SVT Naco · Apr 2, 2010

did anyone add a catalytic converter when they installed the header? i believe most catbacks for the Ford actually take out the catalytic converter that's after the flex pipe. when I added my Ford Racing cat-back, that's exactly what it did. the only cat i have left is the one on the exhaust manifold. i bought a cat to put on my exhaust kit so it would help with the noise as well as make the car "legal" in Texas. is there any room to put a catalytic converter on the exhaust kit where it hooks up to the flex pipe? anyone have any knowledge on this. thanks guys!

FSWerksVP · Apr 3, 2010

epwolfram said:
My understanding is that a resonator will attenuate low frequency noise (like the drone at hwy speeds) and a glasspack will absorb high frequency sounds (like the harsh, brittle, ricey, raspy sounds).

If I'm wrong about this someone please correct me, but I think you need a glasspack (or similar), not a resonator. I believe that the FS Stealth Kit adds an extra glasspack.

The FSWerks Stealth exhaust has no resonators or glasspacks. We use two of our mufflers.

Mabolzichjjl · Apr 3, 2010

FSWerksVP said:
The FSWerks Stealth exhaust has no resonators or glasspacks. We use two of our mufflers.

:O
now im curious as to what your mufflers look like on the inside..

Cameroon · Apr 3, 2010

Mabolzichjjl said:
:O
now im curious as to what your mufflers look like on the inside..

They are straight through perforated, not louvered, core mufflers. Same basic design as a Magnaflow muffler.

Mabolzichjjl · Apr 3, 2010

what do they use for packing? (if there is any)

epwolfram · Apr 3, 2010

Magnaflow uses Rockwool, which is a heavier, tougher fiberglass.

http://www.magnaflow.com/05news/news/italien.asp

so, it's essentially a glasspack.

Quiet me down

zx3r_type

GFXjamie

hommie

zx3r_type

Focusing

06stfocus

03JME

Mabolzichjjl

03JME

Mabolzichjjl

epwolfram

Mabolzichjjl

Chexmixa

Cameroon

SVT Naco

FSWerksVP

Mabolzichjjl

Cameroon

Mabolzichjjl

epwolfram

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