I guess I will order the exhaust gaskets for the 1000 and see if it bolts up. The throttle body is the same for both 850/1000 so hopefully the exhaust fits. I’ll have to measure the head ports and the pipes to make sure I’m not restricting it with the 850 exhaust.
I know the 1000 has larger exhaust and intake valves than the 850 but since the intake side uses the same size TB, I hope the exhaust is the same. They also use the same muffler. The parts diagrams look identical but there’s no mention of the ID of the pipes.
I guess I will have to find out.
As for the ECU, will I have to take it to Polaris to have them reflash it with the Programming for the 1000, or can I literally just plug it in and run the engine with no change to the programming from the 850?
I will be getting a Stage 3 tune from RVS Performance and I want to make sure everything is proper before they tune it.