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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

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  #1  
Old Sun, October 9th, 2011, 11:15 PM
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Default custom tunes and vehicle emission
should i put my truck back to stock like a week b4 i take it in for emissions so it can reset everything

or could i leave it on my custom 87 performance tune..

thanks
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Old Sun, October 9th, 2011, 11:49 PM
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Just leave it. It'll be much easier that way.
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Old Mon, October 10th, 2011, 06:47 AM
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Quote:
Originally Posted by Longshot270 View Post
Just leave it. It'll be much easier that way.
X2. Unless you want to reset the P1000 code (complete the drive cycle or through the Gryphon) DO NOT SET IT BACK TO STOCK.

Just take it in (unplug the OBDII cable).
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Old Mon, October 10th, 2011, 12:26 PM
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I just posted this in another thread. http://forum.gopowerhungry.com/51979-post3.html The links in it answer your question.

- Jack
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Old Mon, October 10th, 2011, 02:01 PM
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Quote:
Originally Posted by kobra_commader View Post
should i put my truck back to stock like a week b4 i take it in for emissions so it can reset everything

or could i leave it on my custom 87 performance tune..

thanks
No......don't do anything with programming......before you go pull the programmer and cable......leave the vehicle programmed....
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