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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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Old Wed, September 22nd, 2010, 02:55 AM
cajunboy2208 cajunboy2208 is offline
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Quote:
Originally Posted by Longshot270 View Post
Ticopowell has it pretty much nailed on the CAI issue. Having a custom tune written for it makes the intake safe. The only problem I'm seeing is a chance of running 87 octane on a 89 tune or 91 octane on a 93 octane tune. You can run fuel that is a higher octane but not lower. What you could do is get a set of 87 and 91 octane tunes and if you ever fill with the higher grade stuff you just add 1 to the timing.
Eh? I got an 87 custom tune months ago. And I am wishing I went with the 93. So all I need to do is add 2 to the timing and I can start running 93?
The stock 93 performace tune did better than my 87 custom performance tune...
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