LS1TECH - Camaro and Firebird Forum Discussion

LT1-LT4 Modifications 1993-97 Gen II Small Block V8

cut out vs true duals...

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Old Apr 29, 2007 | 09:27 PM
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Default cut out vs true duals...
I am getting a cut out installed and getting my car tuned properly for the cut out. However, I was wondering what is faster a cut out or true duals?
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Old Apr 29, 2007 | 09:44 PM
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What do you mean "what is faster"? I personally went cutout for the loudness and price compared to duals. But now that I have a cam I want duals!
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Old Apr 29, 2007 | 09:50 PM
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TD's will make more power than a cut out.
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Old Apr 29, 2007 | 09:55 PM
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I have the Texas speed TD's and i can feel a bigger difference with it, much more power than a cut out! I would go with TD'S if you got the money.
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Old Apr 29, 2007 | 09:58 PM
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naa..I already have a nice cat back...I was just wondering what makes more HP, torque etc...The cut out is being put on now.
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Old Apr 29, 2007 | 10:05 PM
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True Dauls will make more power when your running straight thru mufflers....


Radical setups, just need header dumps off the long tubes but thats drag/race car stuff...

TDs for the win, I felt a gain from going from a Open Y pipe, to dauls it was worth it
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Old Apr 29, 2007 | 10:59 PM
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anyone running the texas speed true dual? is that made to go all the wawy back or dump before the axles? 459 seems pretty expensive if it dumps before the axles
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Old Apr 29, 2007 | 11:09 PM
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Originally Posted by plaf713
anyone running the texas speed true dual? is that made to go all the wawy back or dump before the axles? 459 seems pretty expensive if it dumps before the axles
i am not sure but i would bet it dumps before the axle, as a custom over the axle set up can cost $1000+
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Old Apr 29, 2007 | 11:10 PM
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TSP dumps pretty much at the axel....
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Old Apr 29, 2007 | 11:15 PM
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Originally Posted by 97blackz28
i am not sure but i would bet it dumps before the axle, as a custom over the axle set up can cost $1000+
thats why you go under the axles, but am i the only one that thinks that 459 is alittle to much? i bet you could peice one together cheaper
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Old Apr 30, 2007 | 10:21 AM
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so then a cut out will make more power than a regular cat back right?
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Old Apr 30, 2007 | 02:32 PM
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yes cut outs will but you will loose tow end torque with them
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Old Apr 30, 2007 | 02:56 PM
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Originally Posted by plaf713
yes cut outs will but you will loose tow end torque with them
On my stock car with the cutout open I didnt lose any torque on the dyno. I had a 10hp and 1tq gain.
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Old Apr 30, 2007 | 02:58 PM
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the flow of the exhaust out of a true duals system will be much more consistent and smoother than out of a cutout
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Old Apr 30, 2007 | 03:55 PM
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Originally Posted by nomoneyz
On my stock car with the cutout open I didnt lose any torque on the dyno. I had a 10hp and 1tq gain.
never said you would loose hp, usually you low end torque drops a little and you gain it on the high end
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Old Apr 30, 2007 | 04:25 PM
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10 HP at the rear wheels...that doesn't sound bad at all.!!
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Old Apr 30, 2007 | 04:54 PM
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Get a universal x pipe from Jegs or Summit if you want to save money. And having true duals run over the axle isn't that expensive, only cost me $240 without the price of the tips.
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Old Apr 30, 2007 | 05:00 PM
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Originally Posted by josh3111
I am getting a cut out installed and getting my car tuned properly for the cut out. However, I was wondering what is faster a cut out or true duals?
You don't need a tune to run a cut out.
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Old Apr 30, 2007 | 09:04 PM
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Originally Posted by josh3111
10 HP at the rear wheels...that doesn't sound bad at all.!!
Ya I wasnt even expecting that but its cool I love it.
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Old Apr 30, 2007 | 11:49 PM
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I am tuning it for my hot cam and deleting 02's
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