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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
MPT Tune Version 4
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<blockquote data-quote="M3sparky" data-source="post: 1291294" data-attributes="member: 28858"><p>Just got my prx91 installed and went for a drive on my way home, feels great when I'm barly pressing the gas but when I go wot it actually feels slower in higher rpms is this normal ? </p><p></p><p>Also It only goes up to 18 psi and drops back to 17 or so,. When I drove it stock I had it jump to 18 psi to but dropped down to 15 to 17. So I don't understand why the psi isn't higher like spiking to at least 20. What psi are you guys having? </p><p></p><p>The shifting also doesn't reach redline and shifts early everytime, so I'm confused if the the tube flashes the trans as well or just the engine computer? I know on my gmc and gtr I had to flash a different file for transmission so I'm curious if I have to buy a separate tune to get the trans tuned. I only drove 20 miles or so not much testing yet.</p></blockquote><p></p>
[QUOTE="M3sparky, post: 1291294, member: 28858"] Just got my prx91 installed and went for a drive on my way home, feels great when I'm barly pressing the gas but when I go wot it actually feels slower in higher rpms is this normal ? Also It only goes up to 18 psi and drops back to 17 or so,. When I drove it stock I had it jump to 18 psi to but dropped down to 15 to 17. So I don't understand why the psi isn't higher like spiking to at least 20. What psi are you guys having? The shifting also doesn't reach redline and shifts early everytime, so I'm confused if the the tube flashes the trans as well or just the engine computer? I know on my gmc and gtr I had to flash a different file for transmission so I'm curious if I have to buy a separate tune to get the trans tuned. I only drove 20 miles or so not much testing yet. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
MPT Tune Version 4
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