When it comes to mods, I think of my car as a 2" water hose split into 3 sections. 1 section is the intake, the 2nd section is the engine, the 3rd the exhaust. Let's say adding an intake (or K&N filter) would make the first section of the hose 3" big and would now flow 3" of water. BUT...sections 2 and 3 are untouched and are still 2". The most you can flow from this car is still 2" of water. In order to truly notice a 3" flow from section 1 through 3 you MUST mod the rest of the car and make each mod complimentary to each other. Not doing so will realize little to NO performance gains.
Hope this makes sense...kinda elementary, I know, but its how I decide on what type of money I should spend on mods that will do
NOTHING! 
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