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hey guys new to this forum because im in need of some help. for about 4 years now i have always ran 91 octane fuel at 40:1 in my banshee. as far as i know (what the previous owner brefly explained when i purchased the quad) my banshee was bored out to a 405cc and everything to my knowledge was left stock. i have no idea on jetting but the heads, carbs, reeds etc were all left stock. the quad has always been reliable and FAST. recently i wanted to try to get a little bit of edge racing in the sand and tested out the VP 110 racing fuel at 40:1 however by the time i got to competition hill my quad didnt seem like it was making full power. i could usually race up the hill in 4th and now struggle and find myself clutching it in first just to try to stay on the powerband. also i usually start my races out in second gear and the quad launches hard no problem, now i struggles in first. I have an all around power loss and dont know if i fouled something, plugged something, or possibly let the motor go. immedietly thinking it was the fuel, i drained the gas tank and swapped spark plugs out but i never got my power back. anybody know why this is happening or a possible fix? does this have anything to do with not knowing my compression or jetting sizes? wheres a good place to start?
