ok heres the deal. i bought a go-kart with a 5hp briggs fun power engine on it. we ran and ran worked fine. my buddy buys a cart with the same engine on it but it dosent say fun power on the side cover, it just says 5hp. and it runs like bat out of hell. extremily crazy torque and fast.both are chain driven why is mine running like ****? my 5hp when you slide the cart around in gravel the engine dies and stalls. "note its wide open throttle at this point" govener disconnected. dual wheel drive - solid axle my buddys 5hp runs crazy fast and lots of torque, spins the whole time. sounds different. more pressure comming out of exhaust than mine "when you put your hand behind it you can feel it" he has 1 wheel wonder. "1 wheel drive" why is my engine lackig so much power compared to his??? please reply or e-mail me email@example.com thank you.