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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 Mon, March 23rd, 2009, 02:36 PM
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MercedesTech MercedesTech is offline
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First thing I thought too, but it doesn't seem to be the tunes at all. I have run my 87 econ tune, and my 91 tow tune, along with stock tunes, nothing changes.

Yes, the little bounce was with OD locked out. Its pretty much how I drive my truck right now, jump in a turn OD off. There is a little bounce, but I didn't write those numbers down, so I will have to double check. You don't feel it like you do in 4th, thats for sure. I will get more numbers tonight, or tomorrow.

I think its something with the trans, but really not sure. Next step, is to undo the gotts mod. Not sure if I mentioned it already, but right before this starting happening, I did the gotts mod and a drop in K&N filter. I doubt this is the cause, but will take seconds to "undo" and test out.

Thanks for the help guys, keep the ideas coming !
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