my sled is a 2014 sp 154 bought December 30th 2013. At 1768 km the cel light came on after the sled was running rough and back firing, before it did this it wouldn't rev over 6000 rpm. the code 1477 was displayed which is rave valve not closed. i took it to the dealer and he claims he found a disconnected hose and that was my problem. Today i took it out and it did it again. Ran good for a half hour then wouldn't go over 6000 rpm, started back firing and displayed 1477 cel code. got it back to blue called the dealer at RTR and he wants me to take it back. After finding this thread mine has no dots that i can see, but has number 409, im gonna assume that my raves are toast, and demand the recall.