Live4Quadin

Friend of mine has a new Banshee with Toomey T6's, K&N filter with the airbox vents that come with toomey's, and V-force 3 reeds. To my knowledge, these coolheads run cooler and bump up your compression? Also, which domes would be an all around dome for under 1500 feet i think (florida) and the gas that should be ran with it. We mainly run in the trails and pits. Thanx in advance for your help.