Hi there,
I have a similar problem,
I brought the speed passion reventon pro a few months back, what I have a problem with is, sometime 9 out of 10 I have got brakes, just the odd 1 time out of 10 I get complete brake failure ( no brakes at all ) quite disturbing when hurtling down the straight, so when you hit the brakes there's nothing, just a slammed car at the end of the straight
Could this be the power caps ?
I have tried changing sensor wire and changing modes but still has this intermitent fault.
Anyone please help !!!!