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Smooth power coupler

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Old Aug 11, 2015 | 11:49 AM
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Default Smooth power coupler

I thought that I would add some cheap color under the hood do I bought the smooth red power coupler. The car has a medium cam and street tune. After adding the new coupler, the car ran a little off. I figured the computer was learning and would adjust. After it warms up, the car runs terrible now. I checked for leaks and there are none. Could the tune have been that tight that this would throw it off? Any thoughts?
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Old Aug 11, 2015 | 12:16 PM
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Originally Posted by myredhead1
I thought that I would add some cheap color under the hood do I bought the smooth red power coupler. The car has a medium cam and street tune. After adding the new coupler, the car ran a little off. I figured the computer was learning and would adjust. After it warms up, the car runs terrible now. I checked for leaks and there are none. Could the tune have been that tight that this would throw it off? Any thoughts?
I did the exact same thing you did, and I have not had any issues. I do not have a cam (yet) but blackwing and lg headers, full exhaust, when tuned. Good luck!
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Old Aug 11, 2015 | 12:17 PM
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Originally Posted by 2003RedVette
I did the exact same thing you did, and I have not had any issues. I do not have a cam (yet) but blackwing and lg headers, full exhaust, when tuned. Good luck!
Have you tried the original coupler to see if it clears up?
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Old Aug 11, 2015 | 12:37 PM
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Originally Posted by 2003RedVette
Have you tried the original coupler to see if it clears up?
I just put the accordion one back on and the problems instantly went away. I'm speechless. The new red one was tight with no leaks.
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Old Aug 12, 2015 | 09:09 AM
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This has been discussed numerous times, here is a part of the reason:

Slowing the airflow down by using a larger air path to intake can, in fact cause ill low engine load performance. A pretty air bridge does not win races or give proper balance of the correct amount of air and fuel needed in all engine loads or conditions. Larger airflow requires what GM did with the C6 and that is a new faster PCM with firmware to make use of the airflow to help response times and not to make more HP.
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Old Aug 12, 2015 | 05:05 PM
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Default Smooth power coupler

I had the same issue with a custom intake I had installed. Car ran like crap at startup. Put the original intake back on and it ran like a champ
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