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<p>[QUOTE=&quot;Turbrospeed, post: 11455159, member: 300538&quot;]I would like to put my truck on a dyno to see exactly where she is at. Even though the mechanic said that i have such power, that could be false since i didnt really see them doing it. I have a scan gauge and boost only goes up to 31.5 psi, it also tells you the hp of the motor, before the inframe i saw up to 480hp on cruise up a steep hill.</p><p><br /></p><p>Now I have only seen just a bit over 300hp, Scan gauge has the same settings as before. Truck tends to lose momentum when rpms dip under 1300 on a steep grade going 70mph plus with a 10k or less load.... dry van all steel wheels with 295/75/22.5 tires.</p><p><br /></p><p>I use to run continental hdl super singles and a 10 speed...i change to a 13 speed because i had no overdrive on that 10. Was doing 65mph at 1600rpm on 11r front tires.</p><p><br /></p><p>In the rear I have steel inner and aluminum outer wheels on some crap thailand trazano 295/75/22.5 tires (bad invesment) which am itching to change out for some all positions for a smoother ride.</p><p><br /></p><p>&nbsp;Right now i have 2.9 rear end, doing 70mph at 1280 rpms due to the 13spd, might be thinking of putting maybe a 3.5 so i can cruise at 65mph around 1400[/QUOTE]</p><p><br /></p>

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