Quote:
Originally Posted by jbenington86
I completly understand where you are coming from but still dont understand....I have read 4-5 websites that say if you have a turbo car CAI will do next to nothing. Why would they feed false information on there own cars? With or w/o a turbo it is still letting the car breath just as easy...in a turbo car air is forced into the cylinder and on a N/A motor the piston sucks the air in...even with the turbo forcing air in if you want more cfm's in the cyliner raising PSI is how you do that...maybe i need to take physics again
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Both the 128i and 135i have "cold air intakes" right from the factory...ambient air enters the system through the two front kidney grills. Besides adding a K&N drop in filter to increase the CFM's a bit, you'd be hard pressed to design an intake for a 128i that both flowed as well, and kept intake air temps as cool as the stock system. (The only reason they don't use K&N's stock is because they don't filter as well as paper, but they do flow better.)