Air intake system- COLD AIR and CUP intake systems?
Answer> This refers to a modification or total replacement of the OEM air intake system. Modifications include different air box lids complete removal of the lid and the total replacement of the stock air box with free flowing filters and larger diameter tubes. All this is done to accomplish more air being allowed to enter into the engine easier. **simple rule of thumb- upgrades done to increase the amount of air and fuel going into the engine add power. Making the exhaust systems flow better and evacuate the spent exhaust gasses also adds power.