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Old Mar 23, 2011 | 08:26 PM
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Question cut out question.....

Which is better, one cutout after the ORY or 2 before? and what would be the power difference between the 2.
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Old Mar 23, 2011 | 10:06 PM
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Shouldn't matter or make a difference, one should be good enough
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Old Mar 23, 2011 | 10:31 PM
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Dual will be louder, but create more turbulence when closed.
Single will still be loud, and have less turbulence when closed.
Dual will produce less torque than a single because of less back pressure (or so I have heard, not completely sold on that though)
Power should be about the same though.
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Old Mar 24, 2011 | 09:54 AM
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A single cutout in the intermediate pipe will be best for most set ups. A dual would work better on an exhaust that does not have a good y merge.
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Old Mar 24, 2011 | 10:26 AM
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Originally Posted by Quick Time
A single cutout in the intermediate pipe will be best for most set ups. A dual would work better on an exhaust that does not have a good y merge.
I was gonna put dual cut-outs in the Y before the merge. I didn't think it would make that much turbulence.

So just one big cut-out in the intermediate will sound good and make power at the track/dyno ?
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Old Mar 24, 2011 | 10:51 AM
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Originally Posted by boostedbird38
I was gonna put dual cut-outs in the Y before the merge. I didn't think it would make that much turbulence.

So just one big cut-out in the intermediate will sound good and make power at the track/dyno ?
If you want duals i would recommend our low profile oval cutouts. I prefer the sound of a single cutout over a dual. Power wise single vs dual is not much. When you get to the 500 rwhp is where the difference gets bigger.
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Old Mar 24, 2011 | 11:11 AM
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Originally Posted by Quick Time
If you want duals i would recommend our low profile oval cutouts. I prefer the sound of a single cutout over a dual. Power wise single vs dual is not much. When you get to the 500 rwhp is where the difference gets bigger.
thank you. i'll have to listen to some single vs. dual videos
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Old Mar 24, 2011 | 11:18 AM
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thanks for the help guys
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Old Mar 24, 2011 | 03:05 PM
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Personally I voted for a single cutout. I explored the idea of dual cutouts in the Y-pipe before the merge and I cut my cost in half and went with a single in the intermediate pipe and have been very pleased.

Although I don't have concrete dyno results to substantiate it, I would imagine there is a nominal difference in performance between the two.
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Old Mar 25, 2011 | 09:04 AM
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Originally Posted by Midnight02
Personally I voted for a single cutout. I explored the idea of dual cutouts in the Y-pipe before the merge and I cut my cost in half and went with a single in the intermediate pipe and have been very pleased.

Although I don't have concrete dyno results to substantiate it, I would imagine there is a nominal difference in performance between the two.
and you like the sound of it ?
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Old Mar 25, 2011 | 09:54 AM
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After hearing my buddies dual low pro DMH cutouts. It instantly sold me, so I bought a pair for myself
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Old Mar 25, 2011 | 01:16 PM
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Originally Posted by DeLaRosa25
After hearing my buddies dual low pro DMH cutouts. It instantly sold me, so I bought a pair for myself
Man....that's contrary to everything we just read !!

need to listen to some LT, ORY & cutout samples
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Old Mar 25, 2011 | 07:53 PM
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Yea..I've heard tons of single cutouts..After hearing my buddies duals on his T/A then another friends.. I liked the sound alot better.

But thats just me.. my own opinion.. It helps alot more if you are in person listening to the sound rather than through speakers. Thats what helped make my decision.
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Old Mar 25, 2011 | 09:18 PM
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Yeah I think duals sound way better also,
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Old Mar 27, 2011 | 07:22 PM
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Originally Posted by SoWazIt2You
Dual will be louder, but create more turbulence when closed.
Single will still be loud, and have less turbulence when closed.
Dual will produce less torque than a single because of less back pressure (or so I have heard, not completely sold on that though)
Power should be about the same though.
It is absolutely true that 2 dual cutouts before the y merge will produce less torque down low. Anytime you have 2 tunnels of air merging into one, this creates a backpressure. You are squeezing the air from both pipes into one, which is gonna create velocity and low end power. You lose this velocity when you open them up before the merge. That being said, duals before the merge will create more end up top. Why? Because the volume of air is increased. Its a velocity versus volume situation. Its the same with intake manifold runners. Smaller runners will produce more low end power because air must travel fasters through a narrow tunnel versus a wider one. This instant velocity increase will get the car moving better down low. However, the lack of volume of air (cfm) will cause the engine to run out of steam up top. Larger runners will take longer to get the car going, but at high rpms, where there is less time to move air in and out, the volume of air that is being moved will create good power.

Sorry for the run-on. But yes you will feel a little bit of low end loss. Strictly running a single cutout in the i-pipe open versus closed will steal some torque. However, it will be a more significant difference with the situation at hand (single after the y-merge or dual before the y-merge).
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