Dynomax muffler - some questions

Hi everyone,

After much researching, I've decided to go w/ a Dynomax muffler and tip to replace the rusty stock exhaust. This was based on Rickshaw's, Gussies, and others' recommendations/reviews.

I am still deciding on a Superturbo or the new VT. It doesn't look like anyone has done the VT install yet, and the no-drone benefit seems really nice...

I did have a question regarding fit and configuration since I'm new to this. It looks like there are 2 models for the superturbo that people have recommended. The 17744 which has a 3" inlet/outlet, the 17747 which has a 2.25", and a 17748 w/ a 2.5" opening. I'm getting some conflicting information about which size fits the stock piping in our trucks.

Regardless of the stock size, someone mentioned that going too big would affect torque, so it sounds like the 3" is not a good idea. Between the 2.25 and the 2.5 - which makes the most sense? What would be the easiest to install if that was the most important criteria?

Also there was some conflicting discussions on whether or not the muffler had to have a center to outset configuration vs center to center or outset to outset. What does our stock muffler use?

I appreciate the help!

I'll leave it to those who've done muffler swaps to answer the more technical questions, but I will say that any +/- HP or torque based on muffler configuration is likely to be marginal at best. I've read many, many, many exhaust mod reviews on sports car sites where owners claimed to feel (via "butt dyno") the increase in power, only to have a real dyno show them they are sadly mistaken.

I'm really interested in the VT muffler, so I say pick it so you can write a review and post sound clips. :)

sorry to TJ just a smidge, but my ? is close...

anyone ever heard a dynomax on any other vehicles?? im thinking about getting one for my 4runner, but generally dont like how exhausts sound on Toyota's, they make them sound very 'tinny'....

IMO 3" is way too big for a V6. Dunno what your stock pipe is, but in your shoes I would go 2.5"...in fact I had a 17748 on my old 99 Trooper (same 3.5L as a VX, although honestly the 2.25" would work fine too based on size charts at Dynomax). I liked it a lot. So much that I put a 17747 on my current 93 Trooper (went with the smaller 2.25" for the smaller 3.2L). Neither one droned on the highway, BTW. Nice mellow throb at idle, you can hear it on acceleration but it is not noticeable at cruise.

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Originally Posted by BigSwede

IMO 3" is way too big for a V6. Dunno what your stock pipe is, but in your shoes I would go 2.5"...in fact I had a 17748 on my old 99 Trooper (same 3.5L as a VX, although honestly the 2.25" would work fine too based on size charts at Dynomax). I liked it a lot. So much that I put a 17747 on my current 93 Trooper (went with the smaller 2.25" for the smaller 3.2L). Neither one droned on the highway, BTW. Nice mellow throb at idle, you can hear it on acceleration but it is not noticeable at cruise.

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Thanks for the reference. Yeah, I'm looking at the 17748 right now as well for the VX. I liked the sound based on Rickshaw's media clip. Not too loud at idle, but sounds mean during full throttle.

So I'm hoping the 17748 should fit well w/ the stock pipes.

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Originally Posted by pbkid

sorry to TJ just a smidge, but my ? is close...

anyone ever heard a dynomax on any other vehicles?? im thinking about getting one for my 4runner, but generally dont like how exhausts sound on Toyota's, they make them sound very 'tinny'....

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Just googling dynomax 17748, I found some threads about installs on other trucks. Here's a video of it on a Dodge Nitro

http://www.youtube.com/watch?v=uxyeVsok4Pw

The dynomax superturbo are excelent choices for any V6 engine,altough many owners of V8 cars/trucks use them the nice mellow sound that comes from V6 are more appealing

Dynomax superturbo hands down

The dynomax turbo is a great muffler. I'm going to use it or the magnaflow performance muffler on my 73 challenger. I actually prefer the magnaflow since it's all stainless steel. You might also consider the PowerVault PV stainless muffler and the Borla carbon fiber stainless tip. I've had that on my VX and it sounds 'serious' when you accelerate hard, yet quiet when idling. I don't think you'd be disappointed. It's been an awesome setup for me.
If you do go for a dynomax or other, don't use 3" stuff. That's really for high horsepower motors. I'm using 3" on my challenger but it's way up there in HP. I'd stay under 2.5" for the HP range that the VX puts out even wth a S/C. The smaller diameter also helps scavenge the exhaust better out the back as the exhaust gets cooler back there. Hope this helps! scott

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Originally Posted by BeeVenom

You might also consider the PowerVault PV stainless muffler and the Borla carbon fiber stainless tip. I've had that on my VX and it sounds 'serious' when you accelerate hard, yet quiet when idling. I don't think you'd be disappointed. It's been an awesome setup for me

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That would be in a universe where PV mufflers were still in production...:(

Sorry but, it's been years...

ya, the powervault was amazing.... if i could get one for my Runner, i would. Now i have to find an alternative :(

I ran a Dynomax muffler for a stock replacement sounded good lasted 4 years. Did a little research and went with a Cherry Bomb {Pro series muffler} 3'' in 3'' out to a stock system. If you have ever looked at the stock exhaust there are so many bends and the small pipes, everything is so restricted let it flow. I also have a 3'' cold air intake your converters are so small and restrictive 3'' muffler won;t hurt I have ran a 3'' for7years now. Check it out

Whoa, Ldub! What was I thinkin'?
PV's are dead and buried and that's way too bad! When I think about my VX, I guess I just think I'm in a different world.......or would that be universe? :)

Yea we are in a different world, thank God someone else that has a mindset like I do.

Awesome - thanks! I just put in an order for the Super Turbo 17748 and a Dynomax Dual-wall tip from Amazon.

Hope to get it installed next week sometime! I will take pics, promise!

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Originally Posted by BeeVenom

The dynomax turbo is a great muffler. I'm going to use it or the magnaflow performance muffler on my 73 challenger. I actually prefer the magnaflow since it's all stainless steel. You might also consider the PowerVault PV stainless muffler and the Borla carbon fiber stainless tip. I've had that on my VX and it sounds 'serious' when you accelerate hard, yet quiet when idling. I don't think you'd be disappointed. It's been an awesome setup for me.
If you do go for a dynomax or other, don't use 3" stuff. That's really for high horsepower motors. I'm using 3" on my challenger but it's way up there in HP. I'd stay under 2.5" for the HP range that the VX puts out even wth a S/C. The smaller diameter also helps scavenge the exhaust better out the back as the exhaust gets cooler back there. Hope this helps! scott

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Let us know how it sounds after installation. I know the dynomax's sound deep, mellow and awesome on Mopar V-8's. Keep us informed! thanks!

Just had a super turbo (2.25" in-0ut) installed today. Much quieter than I was expecting.

Really not much sound @ idle IMO, but does get a little more aggressive when I put my foot in it...:yesgray:

Can hear the S/C spin up much better than before.

The ol' Borla was shot, something came apart internally, & was making a nasty rattle. I removed the "strainer" from the tip as well, & it's still a little quiet for my taste in mufflers, but I'll adjust.

Overall, very happy.

Funny you should post this, my Borla setup may have developed a rattle recently as well, tho I'm not sure yet if its coming from the muffler, sounds more like the cat converter, just not sure yet. Definitely somthing exhaust related tho. Only really happens annoyingly when I first start up the VX.

How does the Dynomax compare to the Borla sound-wise?

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Originally Posted by Ldub

The ol' Borla was shot, something came apart internally, & was making a nasty rattle. I removed the "strainer" from the tip, & it's still a little quiet for my taste in mufflers, but I'll adjust.

Overall, very happy.

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Originally Posted by Grif

How does the Dynomax compare to the Borla sound-wise?

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IMO, it's about 1/3 less loud.

That said, my Borla had seen better days, it was cracked @ the front flange, welded, then cracked again in the same place, so that was adding to the db level, as well as "cracking" during decel. As noted earlier, there was a definite rattle inside the body of the muffler, also, when I removed the "strainer" from the stock tip, some old/carboned up batting fell out too...so much for the "million mile warranty"...:rolleyesg

Now, I can hardly hear any exhaust note on decel.

Overall, it still has a healthy note on accel, just not as much, & I kinda miss that...:smilewink

Also, I found some real dyno charts(hopefully impartial) that showed a significant bump in both HP & torque, something I never found for Borla.

http://www.rockcrawler.com/techrepor...hp_rpm_280.gifhttp://www.rockcrawler.com/techrepor...ue_rpm_280.gif

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Originally Posted by Ldub

Just had a super turbo (2.25" in-0ut) installed today. Much quieter than I was expecting.

Really not much sound @ idle IMO, but does get a little more aggressive when I put my foot in it...:yesgray:

Can hear the S/C spin up much better than before.

The ol' Borla was shot, something came apart internally, & was making a nasty rattle. I removed the "strainer" from the tip as well, & it's still a little quiet for my taste in mufflers, but I'll adjust.

Overall, very happy.

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Hey larry just do like i did....want more ? get another muffler in there ;)

I've had mine on for at least a couple of year now. Very happy with it. Also, I ordered mine from Summit Racing and got it cheaper, delivered to my door than buying it from the parts stores. Summit delivered it for free & no tax. Cost me $59. I had Monroe's install it which involved splicing in larger diameter piece leading into and a larger diameter tailpipe leading out. I thought it felt spunkier after I drove it after the install. Like she got a tune-up.

I particularly like the sound of it around 1700-1900 rpms....has a bit louder and lower growl...not ricey.

I keep hoping somebody will post a review of the Dynomax VT muffler, the butterfly valve thing seems like a smart solution to the conflicting problem of wanting growl at WOT with a normal note at idle/cruise. I looked under the VX this morning and the stock muffler is looking pretty homely under there. It must rust 10x faster than the rest of the vehicle. :(

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Originally Posted by vt_maverick

I keep hoping somebody will post a review of the Dynomax VT muffler, the butterfly valve thing seems like a smart solution to the conflicting problem of wanting growl at WOT with a normal note at idle/cruise. I looked under the VX this morning and the stock muffler is looking pretty homely under there. It must rust 10x faster than the rest of the vehicle. :(

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Well...it IS 11 yrs old...:rotate:

This is just my opinion, but I'm skeptical about anything enclosed in a container that collects carbon for a living. I just don't see it as something that's going to function properly for very long.
The super turbo is plenty quiet at idle & cruising speed IMO.
When I drove Hunny Girl to the grocery today, she was very pleased with the reduction in cabin noise...:yesgray: and commented: "I won't have to yell for you to hear me any more".

Of course my reply was: "HUH?"...:laughing:

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Originally Posted by vt_maverick

I keep hoping somebody will post a review of the Dynomax VT muffler, the butterfly valve thing seems like a smart solution to the conflicting problem of wanting growl at WOT with a normal note at idle/cruise. I looked under the VX this morning and the stock muffler is looking pretty homely under there. It must rust 10x faster than the rest of the vehicle. :(

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If the VT is interesting to you, then THIS will really stick in your head...:yes:

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Originally Posted by Ldub

If the VT is interesting to you, then THIS will really stick in your head...:yes:

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More like stick it to my wallet. ;) Cool but way too pricey - the VT muffler is so much cheaper that it's almost worth a try just to see how it sounds.

I went with the AeroTurbine AT2525XL. I LOVE the way it sounds from the outside, but it's a little too resonant in the cabin for my taste.

That said, I saw, listened, and even DROVE Gussie's true-dual Dynomax SuperTurbo setup and can say with confidence that it sounds freakin' incredible. VERY quiet on start and idle and ordinary driving - but when you get on it, it growls like a badass.

I'd like to end up somewhere in between where I am now and where Gussie's is, honestly. So I ask the experts out there, will adding a second muffler in a dual exhaust setup quiet the note somewhat, given the reduced flow through each muffler? Or is the opposite the case, that adding the second will just make it louder and more resonant in the cabin?

OR... third option - just Dynamat the hell out of my interior?

Decisions decisions...
http://img52.imageshack.us/img52/5397/vsig.png

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Originally Posted by Vendetta

I went with the AeroTurbine AT2525XL. I LOVE the way it sounds from the outside, but it's a little too resonant in the cabin for my taste.

That said, I saw, listened, and even DROVE Gussie's true-dual Dynomax SuperTurbo setup and can say with confidence that it sounds freakin' incredible. VERY quiet on start and idle and ordinary driving - but when you get on it, it growls like a badass.

I'd like to end up somewhere in between where I am now and where Gussie's is, honestly. So I ask the experts out there, will adding a second muffler in a dual exhaust setup quiet the note somewhat, given the reduced flow through each muffler? Or is the opposite the case, that adding the second will just make it louder and more resonant in the cabin?

OR... third option - just Dynamat the hell out of my interior?

Decisions decisions...
http://img52.imageshack.us/img52/5397/vsig.png

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Hey vend !

My brother-in-law changed the factory muffler on his isuzu axiom for a magnaflow months ago and he didn 't like ( neither i ) the sound under acceleration and @ cruising speeds just like yours so he swap it out for a dynomax and he love hit although is a bit louder,but not noisy

I know what you are looking for,the problem is our low compression V6 engine,The 3.5L just don't have what's needed to get a perfect so to speak exhaust set up tune.

I personally would love something like how the chevy trailblazer SS or the cherokee SRT8 sounds,but our engine isn't a V8

If you split the two banks and let them run independently each side would flow with less pressure,that's why my VX is quiet @ idle and driving at city speed.

In theory if you replace the OEM muffler for a good high performance one leaving the two exhaust banks meeting @ the Y connection the exhaust flow increases and obviusly gets louder then with the resctricted OEM

Dynomax have youtube videos testing all its mufflers so you can listen to them .

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Originally Posted by Gussie2000

Hey vend !

My brother-in-law changed the factory muffler on his isuzu axiom for a magnaflow months ago and he didn 't like ( neither i ) the sound under acceleration and @ cruising speeds just like yours so he swap it out for a dynomax and he love hit although is a bit louder,but not noisy

I know what you are looking for,the problem is our low compression V6 engine,The 3.5L just don't have what's needed to get a perfect so to speak exhaust set up tune.

I personally would love something like how the chevy trailblazer SS or the cherokee SRT8 sounds,but our engine isn't a V8

If you split the two banks and let them run independently each side would flow with less pressure,that's why my VX is quiet @ idle and driving at city speed.

In theory if you replace the OEM muffler for a good high performance one leaving the two exhaust banks meeting @ the Y connection the exhaust flow increases and obviusly gets louder then with the resctricted OEM

Dynomax have youtube videos testing all its mufflers so you can listen to them .

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Hey buddy!

"I personally would love something like how the chevy trailblazer SS or the cherokee SRT8 sounds,but our engine isn't a V8"

This, 100000%.

What do you think if I go true duals with the Aeroturbine? I'm thissssssss close to pulling the trigger just to freakin' try it.

Hey Gus where did you get your exhaust from and about how much installed I need one bad mine is rusting away:)

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Originally Posted by Otto

Hey Gus where did you get your exhaust from and about how much installed I need one bad mine is rusting away:)

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Otto where you are being my friend ?

I bought the two dynomax mufflers @ amazon.com in what i named the steal-deal of the year.

Both mufflers for $ 85.00 + shipping,total : $ 107,00.

Not sure if you can strike with a deal like again right now,but worth the try.

Installation of both mufflers was around $ 100,00 including pipes and tips.

Ya' might want to consider a "cross-over" pipe between the two dedicated dual pipes???

:_confused

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Originally Posted by Vendetta

Hey buddy!

What do you think if I go true duals with the Aeroturbine? I'm thissssssss close to pulling the trigger just to freakin' try it.

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It could work but i can't tell right know,i'll suggest you drive by any shop speciallzed in custom exhaust systems and hear what they say about that muffler but don't rushed into anything until you are sure what's the best move

second that.
"true duals" on a v6 means 3 cylinders per tail pipe. this can sound a bit off, or tinny. a crossover pipe or a muffler with internal crossover will blend the note.
I've had on a magnaflow- lots of flow but blew through it in a year. i now have a Dynomax, 1 into 2, and really like it.

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Originally Posted by Kenny

second that.
"true duals" on a v6 means 3 cylinders per tail pipe. this can sound a bit off, or tinny. a crossover pipe or a muffler with internal crossover will blend the note.
I've had on a magnaflow- lots of flow but blew through it in a year. i now have a Dynomax, 1 into 2, and really like it.

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I agree Kenny!!! Your set-up of 1 into 2 (single inlet with dual tail-pipes) with the Dynomax Super-Turbo seams to be the very best option and uses the muffler itself as an internal crossover. See "link" below:

http://www.summitracing.com/parts/WLK-19472/

The kit includes dual tail-pipes complete with chrome tips. When my OEM muffler goes out, this will definately be the route I'll take!!!

:bgwb: