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Power Strokes
6.4 Tech
RP Surge (Highway Speed)
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[QUOTE="gman1, post: 245524, member: 783"] Mine does the exact same thing. Eric said its something I have to live with. This is what he wrote me when I emailed him. I've seen the issue you are having many, many times with all tuners on the market. If a truck has the issue, it usually has the issue on both the Race and Xtreme Street. You are fortunate the Race doesn't do it. I built a new tune called Xtreme Mild for the trucks that have the issue, it softens the affects. It's related to the HPFP, but only happens when the trucks are loaded(Converter locked) at low throttle. Xstreet is the worst for me so I use Xrace all the time. I still get it on Xrace but not as bad. The way I get around the problem is to click tow/haul at about 45mph and just cruise at higher rpms. [/QUOTE]
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