You did, of course, program the engine type, right? If you didn't do that, that's the expected behavior. Assuming you did properly program the engine type with the new R2LC-08 board, read on...
Since it reacts after you crack the throttle, top suspect is the serial data link. If you are SURE you have a good connection from pin-24 of the R2LC to pin-1 of the 10-pin connector on the CC-M, you may need a little serial data "boost". Depending on the other stuff installed, sometimes the serial data isn't up to the task of feeding all the serial data connections, so I started making these to solve that problem.