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OBX "longtubes"

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Old 01-20-2007, 06:04 AM
  #141  
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Originally Posted by 99Silver6.0
Never fear guys!!! Theres always tax return time!!!!!
Not when you work on a 1099
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Old 01-23-2007, 11:27 PM
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For those who have these.... Anybody dyno with them after a nice tune?
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Old 01-23-2007, 11:33 PM
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Originally Posted by 99Silver6.0
For those who have these.... Anybody dyno with them after a nice tune?
my truck is getting a custom tune friday. i will post my base line and final numbers.
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Old 01-24-2007, 07:25 AM
  #144  
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Great. Thanks for keeping us updated.
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Old 01-24-2007, 11:59 AM
  #145  
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I'll let you know how they fit on a 4x4 as soon as mine show up. I figured since I'm swapping from a 4.3 to a LQ9 and have to switch out the y-pipe anyhow, I might as well do a bit of an exhaust upgrade while I'm at it.
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Old 01-24-2007, 12:30 PM
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Originally Posted by tenshikurai
I'll let you know how they fit on a 4x4 as soon as mine show up. I figured since I'm swapping from a 4.3 to a LQ9 and have to switch out the y-pipe anyhow, I might as well do a bit of an exhaust upgrade while I'm at it.
Excellent. Thanks
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Old 01-24-2007, 01:52 PM
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i got a buddy with an 03 ecsb z71 that bought some last night. i'm gonna help him install them when they come in so I'll let y'all know in a couple weeks or so.
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Old 01-26-2007, 06:23 PM
  #148  
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just got off the dyno 300whp and 334wtq

07 gmc 5.3l

-obx longtubes
-magnaflow single cat back
-aem intake
-hptuners custom tune
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Old 01-26-2007, 06:27 PM
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That sounds pretty good. Did you have a base line dyno run before the headers to compare this to?
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Old 01-26-2007, 06:28 PM
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Originally Posted by truckmann
That sounds pretty good. Did you have a base line dyno run before the headers to compare this to?
no, what do most 5.3l put down stock?
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