Gibson Extreme Dual Exhaust or Magnaflow?

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Old 03-18-2008, 08:41 AM
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Gibson Extreme Dual Exhaust or Magnaflow?

Hey does anyone have either of these cat-back systems and if so how is the sound... too load, not loud enough, to much resonace inside the cab, anything? Which of the two is recommended...
 
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Old 03-24-2008, 11:51 PM
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Cool

I install all kinds of exhaust every day but I have a Magnaflow 18in. on my 06 using dual out and using the existing r/side pipe and making the l/side pipeto match. I didnt want too much noise and have used Flow masters on all my other cars but found this combination to be really good, not too loud to drive you nuts in the cab but loud enough upon acceleration to sound really good. I installed a aftermarket Flowmaster kit today that had a 40 series muffler and dual out that sounded really good but it rapped a little upon decel and was a little too noisy in the cab. I did get about 2 1/2 more miles per gallon of gas but it went back down after installing the new K&N intake system but did increase response and torque with both....Dog
 
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Old 03-25-2008, 01:03 PM
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I had the Gibson SideSwept SI/SO on my SCrew. It was great. Had a low rumble at idle, but at highway speeds, I could barely hear it in the cab. I just ordered the same for my new SCab.
 
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Old 03-25-2008, 01:38 PM
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Old 03-25-2008, 01:59 PM
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I have a 14" SIDO Magnaflow on my truck and it sound perfect to me.
 
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Old 06-25-2008, 02:13 PM
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Damn dude, that sick! I think I may be buying Gibson rather than magnaflow. Is that the extreme cat back?
 
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Old 06-25-2008, 02:46 PM
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split rear exhaust
 

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Old 06-26-2008, 09:48 AM
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I prefer the Magnaflow for these trucks. Good deep tone and minimal power/gas mileage gains.
 
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Old 06-26-2008, 10:38 AM
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Originally Posted by Rudedog1
...I did get about 2 1/2 more miles per gallon of gas but it went back down after installing the new K&N intake system but did increase response and torque with both....Dog

Aren't you supposed to get better gas milage with both an intake and exhaust?
 
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Old 06-26-2008, 10:58 AM
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Originally Posted by cotedog03
Aren't you supposed to get better gas milage with both an intake and exhaust?
Not until its tuned for the intake and exhaust.
 
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Old 06-26-2008, 11:08 AM
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Is this true even on the '97-'03 f150's as well? I thought if you reset your computer it would accomodate to the increased airflow on its own.
 
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Old 06-26-2008, 01:57 PM
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Originally Posted by cotedog03
Is this true even on the '97-'03 f150's as well? I thought if you reset your computer it would accomodate to the increased airflow on its own.
It will minimally, but until the truck is overall re-tuned for every modification it has the power is still hidden in there waiting to be released.
 
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Old 06-26-2008, 04:32 PM
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sorry to steal the thread, but..if you get both a CAI and new exhaust how pointless would it be w/o a new tune then? granted i know the '97-'03s don't have the same probability of running lean like the '04s but..i'd hate to spend the money on an intake an exhaust only for them to sort of offset each others gains because i don't get a new tune after installing them... again, sorry for stealing the thread. but thanks for the help

Cody
 



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