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Dynomax Dual Exhaust

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Old Feb 13, 2002 | 10:40 AM
  #1  
USMCTransAm's Avatar
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From: Camp LeJeune, NC
Dynomax Dual Exhaust

I have read in a few other strings that Dynomax makes a Dual exhaust setup for our cars. I've found it in Jeg's and will (hopefully) be purchasing it and installing it in the next few months.
My question is, is there anyone out there running with this setup?
Advantages/Disadvantages, are there possibly other options that are better?
(Basicly, I'm asking you all to start a debate on the pros and cons of this type of setup, and possible alternatives. }:>

Thanks to all who contribute!!
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Old Feb 13, 2002 | 11:35 AM
  #2  
88 Camaro SC's Avatar
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From: Whidbey Island
Car: 99 Trans Am
Engine: LS1
Transmission: 4L60E
I too have seen that in Jegs. I was at one time thinkin of getting it also, but I haven't really heard anything about it, so I dont know if it would be worth it. I guess I'm just as curious as you about it. The thing about it I noticed though is how you can't hook it up to the dynomax headers, or the shorty ones I think. I don't know what the hell you're supposed to hook em up with then. So yeah, if anyone else has any info that'd be cool....

Nate
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Old Feb 13, 2002 | 07:43 PM
  #3  
slowV8berlinetta's Avatar
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From: milwaukee, WI
yeah, i'd really like to know about this, so i'm moving it to the top.
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Old Feb 13, 2002 | 08:03 PM
  #4  
87 B4Z's Avatar
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From: Leander, Tx
i think it's ment for LT headers, but i'm not sure. just call/e-mail dynomax for more info.
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Old Feb 14, 2002 | 10:52 PM
  #5  
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From: Chico, CA
Nobody knows anything about it??????

I also looked it up in Jegs but there's really next to no info. on it and no real pictures of it......
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Old Feb 14, 2002 | 11:25 PM
  #6  
iroc22's Avatar
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From: Surrey, BC
I have the Dynomax 2001 catalogue; stole it from work! haha Ok the Dynomax dual system uses the dynomax cyclone shorty headers I am pretty sure. It isnt mandrel bent and it dumps before the rear wheels. I dont want to go get the book cause I am too lazy so if you have more questions; post again and I'll get the book.
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Old Feb 15, 2002 | 12:27 AM
  #7  
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Tas
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what is the point? single 3" will outflow that dual 2.25" anyway.
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Old Feb 15, 2002 | 01:56 AM
  #8  
89 3rd Gen TA's Avatar
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From: Cherry Hill, NJ
Are you sure about that???? Cause i HAVE to think otherwise. single 3 inch only allows all the way..till past the muffler..than ya go with 2.25...combined breathing room of 4.50 inches...so how does this flow better???
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Old Feb 15, 2002 | 03:04 AM
  #9  
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From: Chico, CA
Originally posted by Tas
what is the point? single 3" will outflow that dual 2.25" anyway.
Lets not even have this stupid argument again, everyone says something different anyway, and since everyones an expert.......
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Old Feb 15, 2002 | 04:01 PM
  #10  
89 3rd Gen TA's Avatar
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From: Cherry Hill, NJ
not tryin to start a fight..just stating the facts.
2 lanes of traffic are pretty jamed up...which would be a better way for these 2 lanes to move faster....to enlarge the street to 3 lanes...or to have it divided off into 2 streets of 2....obviously the 2 streets of 2..because it makes 4 lanes..so more cars can move.......think about it
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Old Feb 15, 2002 | 04:21 PM
  #11  
Mark305TBI's Avatar
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From: Huntsville, AL
Car: '00 Chevrolet Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
The area of flow isn't simply calculated by adding up the combined diameters of the tubes. Lets do a little math...

The formula for the area of a circle (which is what the cross section of a mandrel bent tube is) is a = pi * r^2.

For a single 3" tube this would be...
a = 3.14 * 1.5^2
a = 3.14 * 2.25
a = 7.069

For dual 2.25" tubes this would be...
a = 2(3.14 * 1.125^2)
a = 2(3.14 * 1.27)
a = 2(3.98)
a = 7.95

Therefore the dual 2.25 tubes would only get you a 12% increase in cross section for a 50% increase in total diameter.
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Old Feb 15, 2002 | 04:59 PM
  #12  
USMCTransAm's Avatar
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From: Camp LeJeune, NC
OK, now we're getting somewhere.
So a dual 2.25" setup yields a 12% increase in flow over a single 3" setup.
How much horsepower will each of those yield?
Again, anyone running either of these setups?
Any problems with the exhaust exiting before the rear wheels?

Thanks again!!
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Old Feb 15, 2002 | 06:18 PM
  #13  
89formula#1's Avatar
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From: Cinnaminson, NJ
Car: 89 Formula
Engine: Carbed 5.7
Transmission: TKO-600
go with a 3.5 inch single pipe an u will have all the exhaust u need. anyways 3 inch single is good till 400 horse and if u are makin more then that then u are nuts lol
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Old Feb 17, 2002 | 01:07 AM
  #14  
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From: Evansville,IN,USA
Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
So do they make a dual exhaust kit or not? i dont care about the argument. My 406 is gonna need something more than single 3in. thanks
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