GT Performance Mods 2005+ Mustang GT Performance and Technical Information

And the American Racing Headers Group Madness / H-Pipe Preorder Begins!

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Old 4/18/07 | 01:19 PM
  #21  
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i would put money on them NOT being carb legal
Old 4/18/07 | 01:58 PM
  #22  
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From everything I've heard these don't hang as low as the Kooks so therefore no clearance issues.

Originally Posted by CantWin1
How will the catted ones fit compared to the Kooks that some have mentioned hang awful low??

Can't wait for the dyno and the sound clips!!
Old 4/18/07 | 02:33 PM
  #23  
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Originally Posted by Cheese302
i would put money on them NOT being carb legal
And I won't bet against you on that. No L/T's are legal for street use "technically" speaking.
Old 4/18/07 | 02:39 PM
  #24  
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BRING'EM ON!!! The fit can't be that much different than what they've been selling. I mean we are talking about the same actual headers, just a different mid-pipe, and there really ain't much to a mid-pipe. Don't need no stinkin' test fit. I'm sold on these regardless of "testing". He!! I didn't ever test drive a Mustang before I drove mine home. Some things you just know are going to be badasz!
Old 4/18/07 | 02:53 PM
  #25  
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I am so excited about next weeks test fit. I am sure the h-pipe will sound good.
Old 4/18/07 | 03:49 PM
  #26  
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Everyone is going to need a retune for proper AFR and power gains.

The fitment is amazing, and these have great clearance!!

You'll be in love! As far as carb legal... just a simple no. Unless you're in a state that they only require you have catalytic converters and no check engine lights.... such as Aston, Pennsyltucky.

CR
Old 4/18/07 | 04:25 PM
  #27  
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Is there anyway to keep these headers carb legal by doing something like buying cats more restrictive than the ARH ones? I thought you said a while back that I could pass with MIL's.
Old 4/18/07 | 05:40 PM
  #28  
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California says anything other than stock cats in the stock location is illegal!
Old 4/18/07 | 06:44 PM
  #29  
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Is there a way to buy them without cats? I want complete off road.
Old 4/18/07 | 08:30 PM
  #30  
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Yes it is. Give me a shout via PM for pricing. We're selling the 1 5/8" and 1 3/4" Catted AND Un-Catted.

CR
Old 4/19/07 | 03:11 PM
  #31  
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List is getting up there! We got about 2, maybe 3, more systems to hit our mark of 10.
Old 4/19/07 | 03:42 PM
  #32  
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I wont be able to do the group buy though. I will get the headers and h awhile after the site is finished probably.
Old 4/19/07 | 06:58 PM
  #33  
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Price on the O/R option???
Old 4/19/07 | 07:10 PM
  #34  
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CR, I just sent you a PM. Give me a call when you like.
Old 4/19/07 | 08:55 PM
  #35  
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Come on lets get a couple more!

Old 4/19/07 | 09:08 PM
  #36  
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I'm going to stay N/A for a while. I can't say for sure if I'll ever go F.I.. Should I get the 1 5/8 or 1 3/4? Will the 1 3/4 hurt my N/A performance that much over the 1 5/8?
Old 4/19/07 | 09:32 PM
  #37  
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I think I'm going with the 1 5/8 myself because I'm unsure if I'll go FI in the future. [cams would be next for me] It's a minimal price difference, so if you're uncertain wait for actual numbers from both. You can get added to the group buy before you know which you actually want.
Old 4/19/07 | 09:40 PM
  #38  
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Go with the larger... it's the difference of maybe 25 bucks? But you'll be prepared for anything down the road, and with the right tune... you'll lose MINIMAL power... plus cams, any top end, or nitrous, S/C etc will benefit from the larger diameter should you choose to do so!!

CR
Tillman Speed
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Old 4/19/07 | 09:58 PM
  #39  
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CR, will you have comparable charts for both options? I know the stage 3 cams lose a little low end torque so I'd like to preserve as much of that as possible as my car is pretty much a DD.
Old 4/19/07 | 10:02 PM
  #40  
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Yes we will... it may take us a little bit. We will, however, immediately have sound and video as well as pics. The dyno results I'll try and get ASAP, and give you an estimate next week.


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