radiator cap for koyo radiator?
well im finally upgrading my radiator to a koyo unit but i have one question it might sound retarded but ,do i use the stock radiator cap from my old radiator or should use an aftermarket high pressure unit such as a greddy unit or mazdaspeed unit . anyone have this problem ?
well im finally upgrading my radiator to a koyo unit but i have one question it might sound retarded but ,do i use the stock radiator cap from my old radiator or should use an aftermarket high pressure unit such as a greddy unit or mazdaspeed unit . anyone have this problem ?





