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my hp tuner is in the mail and i am a little nervous about doing my first tune, i have a 2002 pontiac GP SE 3100 with a 56mm tb, performance intake, and exhaust (didn't do the dp yet). any pointers/tips? anyone know of any thorough walk-throughs? and should i not use my MAF after the tune? seems a bit odd... i have a CA emissions car so would my car pass emissions?