Quiet Exhaust

Crigano · Mar 27, 2022

Hi All,

I have a 1993 Mustang LX 5.0 that I just purchased. The car has stock headers, hi-flow cats and a mac exhaust.

I'm looking for a quieter muffler with no drone as the mac exhaust is loud inside at cruising speeds.

I've seen a few posts from years ago where people suggested super turbo's. I've had them on my previous mustangs and they were loud inside at cruising speeds.

Looking for some recommendations. Thank you all for looking!

GroverDill · Mar 27, 2022

try Walker Dyno Max Super Turbos

Crigano · Mar 27, 2022

GroverDill said:
try Walker Dyno Max Super Turbos

Thanks. I’ve had super turbos on my previous cars and the drone noise drove me crazy.

1hot87gt · Mar 27, 2022

Damn. I love my MAC exhaust. Mine was installed in the late ‘90’s. At that time it was basically either Flowmasters or MAC. Most guys went the Flowmaster route but the very reputable speed shop that sold me the system and did the install told me the MAC actually made a few more ponies and had much less drone then the Flows. I took their word for it, and they’ve been on my car ever since. Over 20 years now. Crazy. Where does the time go.

2Blue2 · Mar 27, 2022

Keep your Mac mufflers but add resonators down stream.
This kind of attenuation will keep low rumble but kill drone and can talk over it in the car at cruising speeds.

1hot87gt · Mar 27, 2022

I also have a Mac Pro Chamber. If you are familiar with that unit it has a box it looks like that connects the two banks and equalizes pressure while I believe also taming drone. That could also be why my MAC exhaust has very little drone

Mustang5L5 · Mar 27, 2022

99-04 OEM GT mufflers were a great recommendation back in the day. Of course, you could easily find a low-mileage take off without looking too hard. These days, oem mufflers are a bit harder to find but could get lucky and find a set.

They have the car a great growl but we’re much quieter yet would some power

90sickfox · Mar 28, 2022

The best guide mufflers I ever had were Thrush turbo mufflers from Advance. They sounded great on my old 86 vert. Quite at idle with just enough grunt when on the happy pedal. They were the mufflers with the road runner bird on the box. I didn't have drone issues but it was stock with stock cats.

vindieseljetta · Mar 28, 2022

Flowmaster FlowFx!! Super quiet. I have it with shorty headers and bbk catted h pipe and absolutely zero drone

Crigano · Mar 28, 2022

vindieseljetta said:
Flowmaster FlowFx!! Super quiet. I have it with shorty headers and bbk catted h pipe and absolutely zero drone

Thank you. I’ll look into this.

revhead347 · Mar 30, 2022

I use the DynoMax ultraflow SS mufflers, and I have one of the quietest Mustangs I know of. I'm not going to say it's super quiet, but with catalytic converters it should be. Steeda marketed them as a quiet muffler option at one point.

Kurt

Mustang5L5 · Mar 30, 2022

Are those a chamber or straight thru muffler?

revhead347 · Mar 30, 2022

Mustang5L5 said:
Are those a chamber or straight thru muffler?

Straight through. You can drop your keys through the muffler.

Kurt

2000xp8 · Mar 30, 2022

I have ultraflo ss mufflers, I'm pretty sure they were formerly called some type of race muffler (I talked to the dynomax guys on the phone and if I remeber correctly they said they used to be the race magnums). Not sure how they sound with cats, but they are pretty loud on my car, too loud for me. Though the drone is not too bad.
Dynomax super turbos are most likely your best choice.
Personally I think Mac makes total garbage and I will not own one of their parts ever again.

CAMTWO1070 · Apr 2, 2022

Here in NY they just passed a law on loud exhaust systems so I put 2 1/4" headder pipes with an H-pipe crossunder at the rear of the trans at the yoke attached to some 9" free flowing bullet mufflers before the mufflers to look like cats I even installed faux 02 sensors after the free flowing bullet mufflers plus I have FlowMaster Offset inlet/offset outlet Mufflers......

Its so quiet and matched to the brutal torque Im producing it takes some getting used to when gauging speed.....LOL....Im thinking about buying one of those units that project your speed your going on the windshield..

Just the other day I got ripped by a state trooper for doing 87mph coming into a 55 from an onramp he was monitoring and it felt like I was only accelerating up to around 60 maybe 65......After a license check and a short conversation about punching it to flog the engine out a lil before getting on I was given a warning and told to slow down....... LOL

manicmechanic007 · Apr 3, 2022

Mine sounds like a P109 ready for takeoff
Hooker super comps
Cherry bombs
Just pipe for the rest

manicmechanic007 · Apr 3, 2022

That said my 69 Z-28 purred like a kitten and would run circles around my loud as hell current louse

Crigano · Apr 3, 2022

CAMTWO1070 said:
Here in NY they just passed a law on loud exhaust systems so I put 2 1/4" headder pipes with an H-pipe crossunder at the rear of the trans at the yoke attached to some 9" free flowing bullet mufflers before the mufflers to look like cats I even installed faux 02 sensors after the free flowing bullet mufflers plus I have FlowMaster Offset inlet/offset outlet Mufflers......

Its so quiet and matched to the brutal torque Im producing it takes some getting used to when gauging speed.....LOL....Im thinking about buying one of those units that project your speed your going on the windshield..

Just the other day I got ripped by a state trooper for doing 87mph coming into a 55 from an onramp he was monitoring and it felt like I was only accelerating up to around 60 maybe 65......After a license check and a short conversation about punching it to flog the engine out a lil before getting on I was given a warning and told to slow down....... LOL

I live in NY too. How long ago did they pass this law?

manicmechanic007 · Apr 3, 2022

I think the 90db law has been around forever (jackhammers et al.)
I think it applies to car exhaust, the band in your garage and your thumper stereo

limp · Apr 3, 2022

Crigano said:
I live in NY too. How long ago did they pass this law?

Elections have consequences......

Quiet Exhaust

Crigano

Active Member

GroverDill

GoldMember

Crigano

Active Member

1hot87gt

2Blue2

will be trying this sex one when I can find it

1hot87gt

Mustang5L5

That is…until I whipped out my Bissell

90sickfox

Wasn't a pretty sight...and I've got big hands

vindieseljetta

Member

Crigano

Active Member

revhead347

Apparently my ex-husband made that mistake.

Mustang5L5

That is…until I whipped out my Bissell

revhead347

Apparently my ex-husband made that mistake.

2000xp8

CAMTWO1070

Active Member

manicmechanic007

manicmechanic007

Crigano

Active Member

manicmechanic007

limp

wrap a little cheese around it and its a done

Similar threads

Quiet Exhaust

Active Member

GoldMember

Active Member

will be trying this sex one when I can find it

That is…until I whipped out my Bissell

Wasn't a pretty sight...and I've got big hands

Member

Active Member

Apparently my ex-husband made that mistake.

That is…until I whipped out my Bissell

Apparently my ex-husband made that mistake.

Active Member

Active Member

wrap a little cheese around it and its a done

Similar threads

Privacy & Transparency

Privacy & Transparency