I'd be interested to know what yall find out on this. I noticed the exact same thing with my custom tunes; I didn't get the "jaw dropping WOW" that most seem to describe (very similar experience to what Rustler has described). I cannot "feel" any additional power over the canned tunes and maybe very slight power improvement over stock. My expectations could have been unrealistic and I have not gotten on a dyno, which I intended to do but never got around to.
There is certainly improvement over stock as far as shifting (much more responsive), and I could have gotten the power gains that should be expected with custom tunes, but definitely not what I anticipated as far as the seat of the pants feel goes.
I'll try going back to stock again, but I did that months ago and didn't notice a difference after reloading the custom tunes.
I have a 2008 5.4 SCREW 4x4 with 3.73 gears and HEX: RXDG6B4. What do yall have?
Last edited by TX_Hunter; Mon, October 12th, 2009 at 02:14 PM.
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Mon, October 12th, 2009, 01:19 PM
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