Hi, I had a very similar issue with my 05 3d when I first bought it, turned out the lines on the rave solenoid were installed backwards, the line from the outlet of solenoid was connected to the inlet and vise-versa, the pressure line from the engine was connected to the rave directly causing the valves to open and stay open, it would have a slight bog off the line but not very noticeable, but if you went into a turn at speed and let off the throttle first it would loose power until you started to go straight again, if you stayed in the power band in a turn and didn't let off it would stay revving, once I switched the lines it worked as it should!!