I met up with usaguy to run his modded Maverick against my stock one. He has an intake just like mega's, or Weller's, which is a K&N type mounted to a tube that completely eliminates the stock air box. He also had a larger throttle body and a PC5 tuner with auto tune. The PC5 is pretty sweet! I watched him go into the ECU and change the fuel map a couple times. We both ran stock tires with 9 psi in front and 5.5 in the rear, and both in four wheel drive. The terrain had a few rollers in it. We would do two or three runs each time. On the first run the stock Mav beat the modded one by about two lengths. Pulled two lengths on the start and held it till full speed of about 67 mph. We went back to camp and pulled out the laptop to check what the fuel map was set to. For whatever reason Dynojet had set it to 12.2 air to fuel ratio. That's too rich and not good for power. So he adjusted the map to a target ratio of 13.2, and we both got in his Mav, me with the laptop on my lap, and did a few passes to see what the motor was doing. It looked better than the first runs, so we ran the two again. This time his Mav was about one length behind me. After one more round of playing with the fuel map, and a little driving around to let the auto tune do its thing, the AFR was looking better, so we did one more run. This time both cars were even. He is gonna have it dyno tuned to see if he can get some more power that way. He's also going to pull the intake resonator off and look for any restrictions in it. We were both hoping to see the modded Mav beat the stock Mav, but it just didn't happen. Usaguy is obviously on a mission for more power, but it seems that BRP doesn't want to make it easy! On a side note, after the last run, he put his 8 paddle Skats and buffs on, and we ran them again. He got me on the start, and kept pulling away. I topped out at 68, and he topped out at 74!