Dynomax welded vs X

[sefus]

a while back I saw a thread on muffler flow rates and decible levels and think i found the same one when I was searching but what I couldnt find was the difference in the welded and X offerings from Dynomax.

My set up is a headders off a 360, planning to run an X pipe (you want it as close to the headders as possible right?) and bring the exhaust out the rear. I figure a 2.5" size will do me fine. I like quiet and efficiency so from the graphs and reviews Ive seen, Dynomax is the ticket for me.

So who can tell me the difference before I order? Thanks!

-Sefus

 

[1968FormulaS340]

DYNOMAX ULTRA FLO X MUFFLERS (These are duel inlet and duel outlet.)
http://www.dynomax.com/products/ultraflox.html

DYNOMAX ULTRA FLO WELDED MUFFLERS
http://www.dynomax.com/products/ultrafloweld.html


You will want 2 of the ULTRA FLO WELDED MUFFLERS

ULTRA FLO WELDED MUFFLERS are not exactly quiet.

I run them with factory manifolds, x-pipe, 2 1/2 out the back.

I got kicked from my local track for sound.

 

[megajoltman]

The DYNOMAX SUPER TURBO MUFFLERS flow well and are quieter than the welded

http://www.dynomax.com/products/superturbo.html

 

[abodyjoe]

i went dynomax super turbo. love them. 3" pipe x-pipe and mufflers.


magna-flow x-pipe. and the big 3" mufflers.

 

[sefus]

dude, kicked from a track for noise through a full system, yeah im ordering the super turbos. Thanks guys!

-Sefus

 

[1968FormulaS340]

dude, kicked from a track for noise through a full system, yeah im ordering the super turbos. Thanks guys!

-Sefus

Well.... I was told I needed to make a solo sound pass. I also got dinged for no helmet so I went home. I think you will be happy with the Super Turbos, they have a nice sound.

Funny thing.... It was the first time running the E70-14s at the track. I made several passes in the 14s with a high of a 14.7, then ripped off a 13.2 once I started to figured out how to launch.

 

[sefus]

any input as to an offset or center inlet/output? I would think a good exhaust guy could work around whatever i give him but is anyone running into space restrictions against a subframe connector or anywhere else?

-Sefus

 

[rumblefish360]

X pipe around the tail of the tranny area is a good spot and easy to do rather than exact sci. measurements and testing for best possible spot.

A good exhaust man will hook up your mufflers no matter what you give him.

 

[71duster06]

You want the center of the "X" 8-12 inches behind the end of the tailshaft. Mine is centered exactly 10" back. To close to the mufflers and it will cause a decrease in flow due to loss of momentum of the air/gases

Oh and i have the ultraflow welded 2 1/2". Quieter idle than my flowmasters (i had super 40's) but louder when in the trottle. Welded is considered a race muffler though.

 

[GMachineDartGT]

Picked up 18" case GOERLICH Xcelerators. Nice quality, much heavier construction than Magnaflows. I have Dynomax now, and can't stand them...

 

[abodyjoe]

any input as to an offset or center inlet/output? I would think a good exhaust guy could work around whatever i give him but is anyone running into space restrictions against a subframe connector or anywhere else?

-Sefus

Offset in center out

 

[megajoltman]

Picked up 18" case GOERLICH Xcelerators. Nice quality, much heavier construction than Magnaflows. I have Dynomax now, and can't stand them...

What don't you like about them?

 

['74 Sport]

I have Dynomax now, and can't stand them...

Because.....

 

[GMachineDartGT]

They idle quiet, and cruise quiet above 2800 rpm. Light throttle super anoying drone.

 

[megajoltman]

Picked up 18" case GOERLICH Xcelerators. Nice quality, much heavier construction than Magnaflows. I have Dynomax now, and can't stand them...

That sucks I need something that flows well and doesn't drone or sound tinny

 

[1968FormulaS340]

They idle quiet, and cruise quiet above 2800 rpm. Light throttle super anoying drone.

Hmm. I have ran them on 4 cars. I think they are great.

 

[abodyjoe]

Picked up 18" case GOERLICH Xcelerators. Nice quality, much heavier construction than Magnaflows. I have Dynomax now, and can't stand them...

They idle quiet, and cruise quiet above 2800 rpm. Light throttle super anoying drone.

yo pete, what dynomax do you have?


i know my super turbos don't drone at all at any rpm. atleast i don't notice any.

 

[GMachineDartGT]

I have the same 17793s. Looking for something deeper and rumbly without being overpowering. Also going down to 2.5, which is plenty for my 475hp motor.

 

[abodyjoe]

hmmm. weird. even with my built 360 that was in the car i didn't have any problems with a drone. you have an H or X pipe on that car?

 

[GMachineDartGT]

3", X to the 17793s then the tails. Selling off the exhaust in pieces and starting all over again.

 

[doktor_x]

Just to confuse things further...

I'm running these http://www.summitracing.com/parts/PYE-MVR10/ behind the 318 in my Dart. I simplified the mess by ordering the whole system w/ X-pipe. The fit is about as good as can be expected from any system-in-a-box and it sounds good. There's no drone or weird resonance under any driving conditions that I've encountered. The system price has gone up a bit from when I bought it, but it's still an excellent value.

Clip taken at my repair facilities: http://www.forabodiesonly.com/mopar/showpost.php?p=500642&postcount=38

...and a ride-along video http://www.youtube.com/watch?v=LktH07mdljM

disclaimer: the ride-along is 5 minutes of your life that you can never get back