losi xcelorin 6.5 combo powerless

[jon kedge]

Running losi combo but it has no bottom end and the top end is very slow.Have checked power curve and gone through the settings on the laptop and running 22,84 ina losi 22 and i can run faster down the straight.The motor timing is high and running 20,45 c lipo,s and it still dog slow.When the throttle is pushed hard from still it sounds like it takes ages to get going,have checked tranny settings and my old brushed system is 3 times as fast.Any ideas or has it blown something and is going to the bin. thanks jon