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**1988GTU** · 08-02-2013, 10:34 AM

If you want super quiet with a nice deep tone without the raspies AND can manage to tuck this up in there: http://www.autopartsnetwork.com/235-...S4XWh2lROFy_0d
Thats my suggestion. Otherwise, you're going to need to do some creativeness with resonators<< to rid of the rasp/cackles while keeping a rumble tone.

**robertisaar** · 08-02-2013, 10:36 AM

do you have a resonator anywhere in there?

EDIT: it seems i am not alone.

**Superdave** · 08-02-2013, 11:30 AM

The super turbo will really quiet down the resonance and still flows pretty well, pretty similar design to the old Thrush (but better). They're also similar to the Walker Quiet flow (IRIC they are all actually made by Walker now).

A chambered muffler is always going to resonate more sound out of the case itself by design, flowmaster being the worst of the common ones, Aerochamber being the best.

To get rid of the cackle/pop on decel (which i'm surprised is an issue since you have a cat) you can try a resonator or even better a large bore glasspack mid way between the cat and muffler. A Hushpower might work too if you have room.

**woody90gtz** · 08-02-2013, 12:00 PM

No resonator now, but I'm not opposed to using one. Is a louder muffler w/ resonator a better tone than a quieter muffler without resonator? I don't have a ton of room with a cutout, converter & muffler under it already.

I forgot to mention, cackle & pop only seems to be in DFCO. With both of my EFI sticks.

I called Magnaflow and they recommended a 11256...regular straight through with 18" case, not a 3 chamber turbo with packing like the XL. I called Dynomax and they said anything straight through would give the cackle and recommended a Super Turbo...but said the ST would sound just like my VT at idle/light throttle with the valve closed.

**AleroB888** · 08-02-2013, 01:35 PM

Repost, but here is "before" with no resonator:

http://www.youtube.com/watch?v=ZB8EB39zlF4

http://www.youtube.com/watch?v=GxFgiemLwYs

Then "after," adding a Borla XR1 in the resonator spot:

Here's how it sounds after driving over 30 miles on a warm day, hot start. Sorry about the wind noise, but I wanted the sound out in an open space. So, for the record, we have TOG headers > custom downpipe by Hanksville in CO > 3" Magnaflow CAT > 3x5x15 Borla XR1 round case > Magnaflow 14828 3" oval muffler/tip. That's about as straight-thru as it gets with a full exhaust. Louder with a cold start.

http://www.youtube.com/watch?v=GzjD3W01LoM

http://www.youtube.com/watch?v=LCaY2...ature=youtu.be

What it sounds like to people outside the car and/or from a good distance away is always a tough thing to record.

**geldartb** · 08-02-2013, 07:59 PM

i picked the walker quiet flow up for my quit muffler since the insides of the shit one i bought 4yrs ago were rotted out..i also have an edelbrock sdt i can put on for when i want to be louder.

the quiet flow isn't bad and since you don't have a cam like i do it should be quieter than mine. no matter what muffler i put on this thing it always ends up being loud..lol

it's actually not bad at idle and sounds decent when you get on it.

**woody90gtz** · 08-03-2013, 01:04 PM

Originally posted by geldartb View Post

i picked the walker quiet flow up for my quit muffler since the insides of the shit one i bought 4yrs ago were rotted out..i also have an edelbrock sdt i can put on for when i want to be louder.

the quiet flow isn't bad and since you don't have a cam like i do it should be quieter than mine. no matter what muffler i put on this thing it always ends up being loud..lol

it's actually not bad at idle and sounds decent when you get on it.

Got a video? Your car used to be the only one as loud as mine! haha

**geldartb** · 08-03-2013, 01:40 PM

Originally posted by woody90gtz View Post

Got a video? Your car used to be the only one as loud as mine! haha

no video yet..put it on last month to get a sticker since a lot of places told me to basically go f myself with that on..

i also have a 4" round magnaflow muffler where the resonator would go. not sure if it really does anything since it's a straight through design. i'll see if i can get one next saturday if work doesn't decide to crap on my saturday.. i think i have videos of the edelbrock in my car thread on here. i was a half mile away from the camera and you could still hear the car. lol normally i just run it with the cutout bolted on and what ever muffler i have in the back.

i got the stock manifolds on now since i took the headers off to v-band them and i needed something on to get a sticker..doesn't seem like the manifold made much of a difference with the loudness but they raped my top end.

**19Cutlass94** · 08-03-2013, 04:21 PM

I ended up putting two resonators on my car to quiet it down. I have dual Dynomax ultra-flo ss on mine with 2.5" piping and a high flow cat. Its still loud at idle and in the upper rpm range. But just cruising down the road, you barely hear anything.

**woody90gtz** · 08-04-2013, 10:50 PM

Originally posted by geldartb View Post

no video yet..put it on last month to get a sticker since a lot of places told me to basically go f myself with that on..

i also have a 4" round magnaflow muffler where the resonator would go. not sure if it really does anything since it's a straight through design. i'll see if i can get one next saturday if work doesn't decide to crap on my saturday.. i think i have videos of the edelbrock in my car thread on here. i was a half mile away from the camera and you could still hear the car. lol normally i just run it with the cutout bolted on and what ever muffler i have in the back.

i got the stock manifolds on now since i took the headers off to v-band them and i needed something on to get a sticker..doesn't seem like the manifold made much of a difference with the loudness but they raped my top end.

Hey if you can shoot a video for me, put it in a lower gear and get it up in the rpms a little bit and let off so it decels like a stick. I could do that with my 4t60e by putting it in L. Then I could see if it crackles & pops. My Borla never did any of that stuff when it was auto under normal driving.

**geldartb** · 08-05-2013, 04:13 PM

Originally posted by woody90gtz View Post

Hey if you can shoot a video for me, put it in a lower gear and get it up in the rpms a little bit and let off so it decels like a stick. I could do that with my 4t60e by putting it in L. Then I could see if it crackles & pops. My Borla never did any of that stuff when it was auto under normal driving.

will do or at least try. should be able to put it in 2 and bring it up in the rpm's and let off the gas. at that use to sound good with the edelbrock. don't remember exactly but iirc it cackled upon decel when doing this before. haven't done much driving with the quietflow on there.

i usually get the cackle when it downshifts into 2 with normal driving.

**woody90gtz** · 08-13-2013, 10:49 PM

Had any time to get a video? Car is sidelined with an axle issue right now so it would be a good time to order a muffler! haha

**geldartb** · 08-14-2013, 03:20 PM

didn't get around to it.. rained friday and had 2hrs of cutting grass amongst an oil change and u-joint greasing..

should be good for one this weekend..gotta rig up a temporary hanger for the mid section of exhaust..i'll get one of the quietflow..

here's one i did awhile back with the edelbrock muffler. the muffler is loud as shit..the difference between it and open exhaust is pretty much nothing..lol

**woody90gtz** · 08-14-2013, 05:30 PM

Yeah Jon has an Edelbrock too and they are loud as shit. haha Couldn't really hear it cackle & pop in the video. Can you hear it in the car?

I thought you already had the Quietflow on...thanks for swapping it for a vid. Can't wait to hear it.

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