I copied d&d's 1200 map and it rips I don't even think I need to make adjustments. I ran it with another 1200 same set up as me and I took him by 3 sled lengths every time.
I'm not sure man, I run the bdx power valve deletes. I cleaned up the bottom end with my boondocker box. I think you need to run that fuel box with that airbox.
I have a set of speedwerx twins on my m1200 and I hate them. They crack all the time and my flange just broke off, I'm done with them going to a speedwerx single.