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This is irrelevant with today's tech and modern encryption. The factory knows if anything but a factory computer logs into the ECU, and all manufactures void warranties when that happens. Heck, the sled won't even start after being pulled from the crate without the service department technician booting up the ecu and setting it up.BRP likely thought about the fact that tuners will be playing with this model sled more to see if they can push the power and they don't want to be left holding the bag if these tuners push a little too far. In the stock form these sleds should hold together just fine as they are not pushing more power than a N/A at sea level. I do realize that mountain riding is much harder on a sled but they need to be designed for that.