Ok so.... My Magnaflow CBE may be a tad on the loud side.

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Pako

Pako

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This is not a complaint thread or a how to make it quiet thread, this is just an observation thread.

I know the exhaust is loud, the rumble from the truck is much louder than what I thought it was going to be. I don't mind it but having conversations with my wife can get a bit annoying. I have thought about Dyno matting the car to kill the road noise and to reduce the exhaust noise from inside the car to make our "talks" easier. I may just have to tell her to not talk to me while we're in the Subie, to save it for the Honda. :D

Now on to the "I didn't know it was that loud....." story. I was on a short trip to the post office this morning and decided to have a little 1st and 2nd gear fun in between stop signs when on the top of my shift I set off the car alarm of a parked vehicle. It was such a Ghost Rider moment when he tears down the street with the row of vehicle alarms all lit up. :lol:

Good times I tell ya, good times.....
 
:lol:
Is there a limit on how loud it can be?

The sound is weird in our truck, it's a diesel so it's quiet on the inside, and when you rev it it is also quiet, but I heard it come down the street one time and I coulnd't believe how loud it was, and it was just cruising.
 
Pako, chuck some throws/rugs/cushions in the back of the car. They'll cut down on in-cabin sound reflections, which will not only reduce overall volume, but probably some of the more annoying booming/harshness.

Otherwise, just PLAY IT LOUD!

I'm of the opinion that booting the throttle on the Jag is performing a public service by playing a nice tune to the nearby pedestrians.
 
My friend has a catless downpipe and a catback exhaust (using Magnaflow mufflers, but not a Magnaflow designed catback). I believe there's a decent sized resonator on the midpipe and then one large Magnaflow muffler, terminating in quad tips. His isn't loud on the highway or anything, just a little bit of rumble. Does yours have a resonator?
 
I hear ya on the tunes Giles. Some day maybe. When I replace the carpet I will likely dynamat the floorboard and the trunk. :)

@Eric,
There is no mid-pipe and the exhaust is a straight through resonator type of exhaust system. In other words, you can look up the muffler pipe and see straight through the 3" pipe with no obstruction. I love the sound but it may be just under the legal noise limit of which I have no idea how many dB's that my be. :)

I have heard of guys putting a mid-pipe muffler in to quiet things down. Until the wife says I have to, I am keeping all of it's low-end boxer rumble for all to hear. :sly:
 
Legal noise limit (last time I checked) is 90 dB.
 
There's supercar loud, and then there's LOUD.

My car is catless and has both a resonator and a muffler, but it's absolutely unbearable to listen to on the dyno. Adding the mid-pipe resonator did almost nothing except make the note less screechy. My car is just a hair-breadth away from being a straight pipe, given how much muffling I get from my muffler.

Which was kind of the point... I got a muffler and a resonator with the smoothest core I could find.
 
For years we drove our truck straight piped off the V8 using Thrush, Flowmasters etc until they found out the previous 6 cylinder had exhaust and cats...Now we are required to have them :/

But we had many of those moments lol.

As far as road noise, all we got was lots of deep obnoxious humming from 33" tires and a bit of wind.
 
Slashfan
For years we drove our truck straight piped off the V8 using Thrush, Flowmasters etc until they found out the previous 6 cylinder had exhaust and cats...Now we are required to have them :/

But we had many of those moments lol.

As far as road noise, all we got was lots of deep obnoxious humming from 33" tires and a bit of wind.
Click to expand...

Ah yes, the sound of 33x12.5's rolling down the road.... I do miss those days.

Like I said in my first post, I'm not complaining... I LOVE hearing the engine and it responds to my foot. That is something I will not tire of too soon. If anything, like I said, dynomatting the floor will be a good first step when I look to replace the carpet. If I decide to put an after market stereo in, then I will dynomat the door panels as well. The stuff is expensive and heavy but the benefits will be there regardless if I am just looking to deaden the road noise or the make the CBE a bit more bearable for those long talks with the wife.

:cheers:
 
Pako
Ah yes, the sound of 33x12.5's rolling down the road.... I do miss those days.

Like I said in my first post, I'm not complaining... I LOVE hearing the engine and it responds to my foot. That is something I will not tire of too soon. If anything, like I said, dynomatting the floor will be a good first step when I look to replace the carpet. If I decide to put an after market stereo in, then I will dynomat the door panels as well. The stuff is expensive and heavy but the benefits will be there regardless if I am just looking to deaden the road noise or the make the CBE a bit more bearable for those long talks with the wife.

:cheers:
Click to expand...
May I ask what type of truck?

Yeah I run 33x12.5r16.5s and they get real noisy in the summer as compared to my factory stock 235x85r16's for the winter but I never cared (LOVE spinning all four 33s lol). My truck never had carpet, just a thick black rubber shell that conformed to the entire floor. Being that my truck was built in 1985, it has hardly any sound deafening in it. I'm sure theres probably better (and cheaper) alternatives to dynomatting isn't there?I mean yes it's going ti be expensive, no avoiding that, but you'd think there would be something to save a bit of cash.
 
My Camaro with longtube headers, no cats and a straight piped with no mufflers through a custom 3 inch catback was loud as hell on the highway but I loved it. I have the opposite problem, mt C6 with it's stock system is way too quiet!
 
@Slashfan,
It was a 1981 Ford F150 Custom short box, standard cab. Basically rebuilt it from the ground up before I sold it. I should have never sold it, I should have never sold it, I should have never sold it. One of my only major sale regrets.

@ND4SPD,
I would love to have quiet for closed loop and loud for open loop fueling. It would be great to have the best of both worlds.... :)
 
Pako
@Slashfan,
It was a 1981 Ford F150 Custom short box, standard cab. Basically rebuilt it from the ground up before I sold it. I should have never sold it, I should have never sold it, I should have never sold it. One of my only major sale regrets.

@ND4SPD,
I would love to have quiet for closed loop and loud for open loop fueling. It would be great to have the best of both worlds.... :)
Click to expand...

Variable mufflers are available, but I don't think they can respond that quickly. I'd rig one up to a throttle-switch.
 

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