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I just bought a 07 m1000 with a jaws can, otherwise stock, fuel map reflashed by arctic cat dealer. I read on D&D that you have to run a fuel pressure regulator for their Y-pipe if under 7,000 feet, this sled has the D&D y pipe on it, and I will be running it at 6000 feet, Will I need to put the regulator on or put stock y pipe back on?