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1997 to 2003 F-150
4.2L, 4.6L, and 5.4L equipped F-150s.


 
 
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Old Wed, May 27th, 2009, 10:30 AM
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Jackpine Jackpine is offline
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Quote:
Originally Posted by 88Racing View Post
Like Paul Harvey used to say "and now the rest of the story".

Turns out sml175's problem began at the stock program level added a tuner to make it better???

The stock program was the culprit not the hand held. Kinda felt like Jack and Bill for awhile not getting all the info up front is kinda frustrating.

Lars
It IS frustrating when you're blundering around in the dark, isn't it?

But, all this discussion has brought up a question that has been in the back of my mind for a while. I guess this is to the Mad Doctor too.

If a lean problem is seen in "open loop", i.e., WOT (in most cases), would increasing the WOT fuel have any beneficial effect? I guess what I'm asking here is does an increase in WOT fuel uniformly lower the A/F ratio across the open loop table? Or, does it just somehow make more fuel (if needed) potentially available, maybe at or near max rpm?
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