Just an example of novices trying to use technology that they do not understand. I had my own XC700 turbo sled at a big local bar in Cadillac, MI. when the bar tender came up to me and said: Turbo Phil, I want you to meet turbo Ed. He owns a turboed 98 XC 700 like yours. Ed asked to see mine. I told him it was sitting right out front. He went out and looked under the hood. He came back inside and said: Your's doesn't have all the maze of plumbing mine has. Why not? I said: "because I don't need it".One of our guys had a turbo 98 xc700. Nothing but issues trying to run it on the trail in quebec with fried pistons, overheating, and lack of finding premium fuel. It never rode well either.
Two guys from Cleveland, Ohio were listening. I was using nothing but pump 93 octane fuel. 8 psi boost.
Turbo Ed says: Let's all ride to another bar about 20 miles away. So, we all rode there. On the way, ED and I compared performance. It was no contest for me. Ed had adjustable boost and race fuel mix as I recall. Didn't matter.
Once we got to the bar, Ee had blown his engine on the way. One of the other riders on a 95 XCR 600 had to tow Ed back to the first bar.
Once at the bar, one of the guys from Ohio says: "Turbo Ed needs to listen to Turbo Phil".
Moral of the story: Listen to the folks who have a track record of success. BTW, my sled also had Boswell moded stock carbs. Ed didn't. LOL!