4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

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Old May 3, 2006 | 11:24 PM
  #1  
Hoppers04Gt's Avatar
Hoppers04Gt
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Default Open Headers

Does anyone know if running open headers will hurt your motor? I probably will do it for only a couple of days.
Old May 3, 2006 | 11:30 PM
  #2  
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Default RE: Open Headers

i think it will sound bad
Old May 3, 2006 | 11:32 PM
  #3  
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No.. It does not hurt your engine.. I know of a lot of people that switch to open headers before they run the 1/4.. But.. I don't recomeend keeping them open very long.. 1. You'll get pulled over.. 2. You'll get a ticket 3. You'll be ****ing poor.
Old May 3, 2006 | 11:32 PM
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Default RE: Open Headers

ORIGINAL: MustangChris04

i think it will sound bad
yup yup. Sounds like *** unless you have a nice built up motor. But, even then, mufflers sound better IMO. Do what you wish though. You do know that you will probably loose power right?
Old May 3, 2006 | 11:40 PM
  #5  
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He shouldn't loose power running open headers But.. What do I know.. I'm still a noob..
Old May 3, 2006 | 11:40 PM
  #6  
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Default RE: Open Headers

Yea i just want to do it for a couple of days
Old May 3, 2006 | 11:46 PM
  #7  
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Default RE: Open Headers

ORIGINAL: mattcooper2005

He shouldn't loose power running open headers But.. What do I know.. I'm still a noob..
You basically loose all your back pressure, therefore loosing torque. I am not sure because I too am still a noob.lol. I've never seen any 1 drive a street stang with open headers.
Old May 4, 2006 | 12:11 AM
  #8  
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One reason nobody runs Open headers on the street is that it is illegal.. .. Also.. Running open headers you 'should' gain HP and TQ.. I know that is the way in some of the old small blocks we have sitting around the house.. But those are older vehicles.. I don't see why it wouldn't be the same.
Old May 4, 2006 | 12:16 AM
  #9  
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my freind has headers to hp no cats no muffs, just dumped h-pipe, its way too loud and with his 4:10 gears he is going like 5 mph and it sounds like he is racing somebody... and it sounds bad... but you can hear him comin...
Old May 4, 2006 | 01:16 AM
  #10  
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Default RE: Open Headers

gas milage will suck also



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