Yup. Had trouble getting it to start when cold (hand flip start). I added a velocity stack and an electric starter. Now when I fuel, I just put a squirt of gas in the carb through the stack, choke and turn through a couple of times, turn on ignition and she fires right away. After the first start of the day, I don't even use the starter. The stack seems to have helped out the idle and transition too. Plenty of power for my style of acrobatic flying. Plus that I can fly for 15 minutes with a good 2 minute reserve on a 24 oz tank of gas with aggressive flying.