for those who have already done this mod, is there a loss of ability to drive acess., primarily A/C? due to the poor design of COOL air flow into the cabin without a/c on, i find myself having no choice but to run a/c on warmer days, and am not willing to give up a measure of a/c just for a small gain of HP. / ...man i miss open air (4 windows & roof) driving on cooler days.