Dynomax
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Dynomax
I was looking for an affordable way to improve my gas mileage by a few mpgs(besides the obvious tuneups and such). Has anyone used the super turbo and seen any difference? Whats your opinion on the interior noise levels? I want to keep it as quite as possible. On my previous truck i ran flows with dual exhaust and went from an average of 14 to 16 mpg but dont want the all the noise. I can get the turbos for $40 vs $100 for the flows. I am just replacing the muffler not the pipes or anything. Ive never heard the superturbos before so im a little nervous about the way they will sound. I have a 98 f150 scab with the 4.6.
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From: San Joaquin Valley
Are you talking about the straight through turbo-muffs that look like glasspacks and are full of sound attenuating dents?
I ran a pair of these on a roadster and they were really noisy.
Not really too much different from a piece of straight pipe in place of the so-called muffler.
Then I gave a pair of glasspacks - about 24" long - a try.
Still on the same roadster.
Like all glasspacks they sounded nice and mellow - for about two weeks then they got a little noisy and stayed that way.
Next muffler tried was the short little Turbo-Muff, this one with the packing.
I'd already heard the non-packing Turbo-Muffs on cars similar to my roadster and they were way too noisy.
The Turbo-Muff with packing was just like the straight through glasspack.
Sounded good for about two weeks, then got noisy.
It did have a nice tone, but was louder than I wanted.
To be fair they were on the car about five years and once they got noisy they stayed the same until they were pulled.
Next mufflers after that - same car - a pair of 2 chamber Flowmasters.
Even with a balance pipe, too noisy, but not too bad.
At highway speeds, pulling 18" of vacuum at 65 mph the muffs are quiet and all you hear is wind and tire noise.
And the wind noise is not as bad as you may think.
'Course, lay on the throttle and it's a different story noise-wise.
Trouble with the roadster is, a longer muff will not fit or I would have used a pair of Hemi-Muffs. Available at most muffler shops.
These are a very quiet and fairly good perfomance muffler.
Even in a dual installation they're quiet.
I just got done doing a dual pipe install on the 02 SuperCrew with 5.4L and automatic.
We used three chamber Flowmasters on it and I recommend them highly.
Lots quieter than the 2 chambers, but they still have a very nice tone.
Performance seems to be improved, but I need to run 2-3 tanks of gas through it before I can see about the mileage.
C9
I ran a pair of these on a roadster and they were really noisy.
Not really too much different from a piece of straight pipe in place of the so-called muffler.
Then I gave a pair of glasspacks - about 24" long - a try.
Still on the same roadster.
Like all glasspacks they sounded nice and mellow - for about two weeks then they got a little noisy and stayed that way.
Next muffler tried was the short little Turbo-Muff, this one with the packing.
I'd already heard the non-packing Turbo-Muffs on cars similar to my roadster and they were way too noisy.
The Turbo-Muff with packing was just like the straight through glasspack.
Sounded good for about two weeks, then got noisy.
It did have a nice tone, but was louder than I wanted.
To be fair they were on the car about five years and once they got noisy they stayed the same until they were pulled.
Next mufflers after that - same car - a pair of 2 chamber Flowmasters.
Even with a balance pipe, too noisy, but not too bad.
At highway speeds, pulling 18" of vacuum at 65 mph the muffs are quiet and all you hear is wind and tire noise.
And the wind noise is not as bad as you may think.
'Course, lay on the throttle and it's a different story noise-wise.
Trouble with the roadster is, a longer muff will not fit or I would have used a pair of Hemi-Muffs. Available at most muffler shops.
These are a very quiet and fairly good perfomance muffler.
Even in a dual installation they're quiet.
I just got done doing a dual pipe install on the 02 SuperCrew with 5.4L and automatic.
We used three chamber Flowmasters on it and I recommend them highly.
Lots quieter than the 2 chambers, but they still have a very nice tone.
Performance seems to be improved, but I need to run 2-3 tanks of gas through it before I can see about the mileage.
C9
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To the best of my knowledge the dynomax superturbos are more like a muffler instead of a glasspack. I havent looked at them yet ive just seen posts on here about them. The guy at the muffler shop said the flowmaster 3 chamber would run about 150 installed and the dynomax would be 75. I dont know if the flowmaster is worth the extra money and if you can hear it in the cab. I was hoping to get some feedback here before i made a decision.
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From: San Joaquin Valley
I know it's a chunk of change extra, but I'd spring for the Flowmaster.
They're made from much heavier gauge metal, well constructed and should last longer.
If the other muffler is the one I think it is, it's a much thinner metal.
As far as lasting goes, a lot depends on where you put it.
Close to the engine, nice tones, runs hotter which means it burns out the acids etc. faster.
Especially helpful if you do a lot of short trips.
You don't want to get to close to the cab though, a friend had a pair of Hemi-muffs put on his 76 or so Ford pickup several years back and towed his ski boat back across the desert from Lake Mojave during an August heat wave.
The floor in the truck got so hot they couldn't keep their feet on the floor.
He ended up putting the muffs back under the bed and it seems like they lasted quite a while there.
Big thing is you don't want them way to the rear or they never get hot enough.
Fwiw - I have no affiliation with Flowmaster other than being an enthusiastic customer.
In fact, I like them so well that I'm thinking very strongly about putting a pair of two chambers with 3-4" inlet/outlets in a dry lakes street class roadster we're building.
These would be 'in-service' all the time and not just when the collector caps were closed.
If you're trying to save a few bucks, why not go for a single Hemi-Muff if you want a reasonably quiet vehicle?
I stuck a single Hemi-muff on my dad's small - 17' - motorhome, 2 1/2" in & out single exhaust, it had a small bit of 'tone', sounded good and the mileage improved over the restrictive muff that was in there.
It should be quieter than a single FM, although I don't know how the FM's do in a single muff installation.
At least as far as noise goes.
I think it would be very similar to the dual 3 chamber FM's that I have on the SuperCrew now
It has a nice tone, not objectionable at all, but you can hear it from the cab.
Both tailpipes exit where the stock single one did.
In fact, hearing it from the cab may just be me listening for the exhaust tone.
Once I get distracted talking with Sweetie - or listening - you don't notice the exhaust tone at all.
C9
They're made from much heavier gauge metal, well constructed and should last longer.
If the other muffler is the one I think it is, it's a much thinner metal.
As far as lasting goes, a lot depends on where you put it.
Close to the engine, nice tones, runs hotter which means it burns out the acids etc. faster.
Especially helpful if you do a lot of short trips.
You don't want to get to close to the cab though, a friend had a pair of Hemi-muffs put on his 76 or so Ford pickup several years back and towed his ski boat back across the desert from Lake Mojave during an August heat wave.
The floor in the truck got so hot they couldn't keep their feet on the floor.
He ended up putting the muffs back under the bed and it seems like they lasted quite a while there.
Big thing is you don't want them way to the rear or they never get hot enough.
Fwiw - I have no affiliation with Flowmaster other than being an enthusiastic customer.
In fact, I like them so well that I'm thinking very strongly about putting a pair of two chambers with 3-4" inlet/outlets in a dry lakes street class roadster we're building.
These would be 'in-service' all the time and not just when the collector caps were closed.
If you're trying to save a few bucks, why not go for a single Hemi-Muff if you want a reasonably quiet vehicle?
I stuck a single Hemi-muff on my dad's small - 17' - motorhome, 2 1/2" in & out single exhaust, it had a small bit of 'tone', sounded good and the mileage improved over the restrictive muff that was in there.
It should be quieter than a single FM, although I don't know how the FM's do in a single muff installation.
At least as far as noise goes.
I think it would be very similar to the dual 3 chamber FM's that I have on the SuperCrew now
It has a nice tone, not objectionable at all, but you can hear it from the cab.
Both tailpipes exit where the stock single one did.
In fact, hearing it from the cab may just be me listening for the exhaust tone.
Once I get distracted talking with Sweetie - or listening - you don't notice the exhaust tone at all.
C9
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I may go with a 3 chamber fm. Im assuming it will be a little quiter with just a single exhaust? I was going to get the muff shop to just cut out the stock muff and weld the fm in. Ive never heard the 3 chambers but i had the 40 series with duals on the dodge i used to have. It had a great sound and looked awesome but were going to be having a baby in about 4 months and I wanted to keep the noise down as much as possible. Plus Ive gotten to where i just prefer a quiter ride now anyways. When you say the 3 chamber fm do you mean the 50 or the 70 series? None of the muff shops here carry either one, all they have is the 40.
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From: San Joaquin Valley
The 40 series are the two chambers.
50 Series is the three chamber.
The mufflers we used had the following number and info on the end flap of the box:
50- series street muffler.
#942551
Which translates to 2 1/2" in and 2 1/2" out.
With an offset inlet and a center outlet.
I'm not sure what the 70 series is.
Your muffler shop should have no problems with ordering the 50 series three chamber that you want.
Delivery here - in Central California - only takes a day or two.
Fwiw - we had to order as my friends muff shop only carries the 40's in stock.
Stick to your guns and go for the three chamber.
It'll sound nice, won't bother the baby and in fact it will probably lull him/her to sleep.
My younger daughter couldn't stay awake in my Olds powered 50 Ford coupe from many years back.
It was a bit noisy, but by the time we got to cruise speed on the highway she was usually out.
50 Series is the three chamber.
The mufflers we used had the following number and info on the end flap of the box:
50- series street muffler.
#942551
Which translates to 2 1/2" in and 2 1/2" out.
With an offset inlet and a center outlet.
I'm not sure what the 70 series is.
Your muffler shop should have no problems with ordering the 50 series three chamber that you want.
Delivery here - in Central California - only takes a day or two.
Fwiw - we had to order as my friends muff shop only carries the 40's in stock.
Stick to your guns and go for the three chamber.
It'll sound nice, won't bother the baby and in fact it will probably lull him/her to sleep.
My younger daughter couldn't stay awake in my Olds powered 50 Ford coupe from many years back.
It was a bit noisy, but by the time we got to cruise speed on the highway she was usually out.