North American Turbocoupe Organization



Muffler advise
Rob H Offline
Senior Member
#1
Howdy y'all.
It's been hot here, had the starter go on the car and didn't feel like doing it so I took it to a shop. While it was in I told him I'm sick of screwing around, I was going to take the turbo off, get the gaskets in there that should be in there, and check for any exhaust leaks at the manifold but wanted him to do it while he has the car. And man am I glad I did. I'll spare you the story. Suffice it to say it is done. I FINALLY have a car with no exhaust leaks.
So now I know it's just my exhaust that sounds like crap. It's loud, and there's just nothing I like about it. I'd like a much quieter sound.
I'm running the 3-in single setup from stinger and I got the dynaflow muffler through them.
Just wondering if anyone has any recommendations for a different muffler.
Edit: If it sounds good, a little loud is fine. If it doesn't sound good, I'd rather have quiet.i find the noise droning and obnoxious.
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Kuch Offline
Senior Member
#2
Rob,
I first had Dynomax Ultraflows on my Stinger 2.5" dual set up on my 88, straight downpipe. I also found these mufflers too loud for my taste especially on a classy car like a Turbo Coupe, here's what I did. Replaced the Dynomax mufflers with dual 2.5" Hooker MaxFLows and added a 3" ID 6" long race bullet where the cat would be, so now I have three mufflers and the car has a nice mellow sound to it, much better than the Dynomax mufflers. From the research I did on mufflers, the Hookers actually flow better and quieter then most other mufflers, but then you are running a single 3" so I think adding either a race bullet or some other small diameter round muffler in line will tone it down.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4, ported E6, 255LPH, Kirban, Stinger Exhaust, MGW shifter, K&N, Gillis valve, BP1.5, PIMPx, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low
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Rob H Offline
Senior Member
#3
Thanks Kuch, exactly the kind of advise I'm looking for. Other than trial and error which isn't really an option, getting advice from fellow owners is about the only other thing I can think of
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Rob H Offline
Senior Member
#4
Hey Kuch,
Any reason you went with the Max Flows over the aerochamber? Seems they are both very popular.
Also, in regards to when you said "either a race bullet or some other small diameter round muffler" do you think you could please help me narrow it down? Does it really matter at all or should I go for a particular brand name, certain diameter? I think the parts store said they could get a dynomax in two different sizes. Would I be better to go larger or smaller for any particular reason?
I really want to nail this I'm pretty excited to get my car back from the shop. Yeah I guess I didn't mention that.
I'm biting what I hope is the last big bullet for a while. The car is on a hoist as I write this. They've got the transmission out hoping to get rid of that damn noise. And the other thing is doing something about the exhaust. So this is all happening now. They are working on it in between other jobs so there's not a big rush or anything they figure they'll have it at least a week. But hopefully when I get this thing out of the shop it's going to sound great and the last of my major annoyances with the car will be gone. I just need to find the mufflers I want.
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88Slowbird Offline
Junior Member
#5
I have the stinger 3" single exhaust with the Dynomax Ultra-Flo as well and its pretty tame sounding to me and doesn't drone 

(I'm also not running a cat so it's probably a bit louder than yours)

If you really want something quieter you could run a Super Turbo muffler, I had them on my car before the new exhaust and they were too quiet for me but they had a nice tone at idle
1988 Thunderbird TC:
  • 5 Speed (with hurst short throw shifter)
  • RR Cam (with Esslinger cam gear)
  • Ported E6 manifold
  • .60/.63 SVO Turbo
  • Stinger FMIC
  • Stinger 3" single exhaust & downpipe (Dynomax ultra-flo muffler)
  • Aeromotive Adjustable FPR
  • AEM Cone Filter in the fender
  • Hallman boost controller
  • Pimp V1.4 (not installed yet)
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Rob H Offline
Senior Member
#6
I also do not have the cat, so we should be practically in the same boat. I guess everyones idea of what sounds good is different.
Im looking forward to MUCH quieter.
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Kuch Offline
Senior Member
#7
Rob,
I went with the maxflows as they are a true straight through muffler as opposed to a chambered muffler. Chambered are not as good in a turbo situation, which is why no one recommends flowmasters. If the muffler lets you look straight through it to the other end, that's a good choice, if you cannot see the other end, move to something else. As far as the race bullt I used a Dynomax race bullet, but this is a style of muffler, usually short, little muffling material, and straight through, look at some of the ones in these pics to get an idea, https://www.google.com/search?q=race+bul...=955&dpr=1 , I simply replaced the cat with one of these 3" bullets as that is the diameter of my downpipe. So whatever fits in your downpipe with the clearance you have will work. It simply tones down the exhaust some more.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4, ported E6, 255LPH, Kirban, Stinger Exhaust, MGW shifter, K&N, Gillis valve, BP1.5, PIMPx, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low
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Rob H Offline
Senior Member
#8
Thanks Kuch, I think I know what you're talking about.
I was looking at their race bullets in 3-in but they all seem to be too long overall. Most of them have an overall length of about 16 in and I think if I recall correctly I was hoping for something 12 in or less and that was pushing it.
I think what you're talking about is the mini race bullets, in 3 in they've got them in a 3.5 round or 4-in round.
Thanks for chiming in. I've actually been reading about these and can't seem to get a straight answer. It sounds to me like some people put them on their vehicles to make them really loud. And other people put them on their vehicles to quiet them down a bit.
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Kuch Offline
Senior Member
#9
the purpose of these mufflers are to quiet down an actual race car as some drag strips have noise or muffler regulations, so these offer a way around that rule. If you put one of these in place of a stock car muffler, it will be way louder, but if used in addition to other mufflers, such as my dual maxflows, it will quiet it down a little more. Basically with just the maxflows it was still a little too loud for me, so I looked for something to mount in the downpipe in place of the cat, if you still have a cat installed, then the maxflows by themselves would sound fine as a cat will quiet down on it's own. I just needed something a little extra to add. You could also look up smaller mufflers called "resonators" such as these types, https://www.google.com/search?q=resonato...=955&dpr=1 , just find a size you need and have it mounted. Lots of options out there.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4, ported E6, 255LPH, Kirban, Stinger Exhaust, MGW shifter, K&N, Gillis valve, BP1.5, PIMPx, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low
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