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fueling question

alright guys I have a 2015 crf450r with full fmf dual exhaust, stage 2 hot cam, high compression piston, pro circuit hp water pump and a fmf fuel programmer would it be a good idea to run half and half race fuel and premium or should I be ok

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C50_mineallmine_1484633218 450rsheff 1/16/2017 10:25 PM

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