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I have '10 assault and wanna do some mods to it. i need it more "torqy" i would like to have a higher ski lift and have the power to keep it up for a bit. as well i have been having bogging problems around 8100rpm then it drops to 6900 but if i pump the gas it goes back to normal. i run the iridium plugs could this be a problem? thanks for the help!