side by side comparison of bone stock xmod vs. fully modded xmod (4wd, stage 2 red motor, suspension, tires, bearings, not fine tuned yet though)......= stock xmod wins the drag race, but loses around corners.
I'll have to do another test but i think the stage2 motor and 4wd kit takes a toll on the batteries much quicker than bone stock.
(i had to get two cuz the first one i bought i just threw on all the hop-up parts w/out running it stock and i wanted to see if there was going to be a big difference or not, i went out and bought the second one only a few hours later.....)