its not the crank u have to worry about. its the valvetrain being able to keep up along with the oil pump. worst scenario would be your valve springs wouldnt be able to keep up and your pistons would start wackin g the valves. or the oil pump doesnt do its job very well, and your motor gets fried, or the piece of crap ebay chip u bought has a flaw and as soon as u start reving high and the lil mexican that made that chip whom forgot to add more fuel at WOT at high rpms forces ur piston to melt inside the cylinder. ditch the chip. build ur head. take ur shit to a tuner