The chargers make a very similar amount of boost at different elevations. But they also use tuning to keep the horsepower and torque the same adlt different elevations, so you don't have to change clutching. On all 6 that we sold, they all got the same clutching, some went to 7000ft, some to 9000ft. I ride mine in Seeley lake, which starts off at about 4500, and also in cooke city, which ends at 10500. Every sled every time will run 8400 rpms. Regardless of exact psi. you can also simply change pulleys for different boost, I am running about 9.2 on pump fuel, mixed. We have not seen any difference in tuning comparing a premixed sled to oil injected. Also, people need to quit with the fuel consumption. I have over 1000 miles on my sled, stock tank, all mountain riding, and have done multiple hard 70 mile days. I don't even take a Jerry can with me. If you are not a decent mechanic, I would not recommend installing these, they are not difficult to install, just time consuming and a few critical steps to ensure everything will be right.
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