I looked quickly but didn't see a simillar thread. I just bought an 04 Accord V6 coupe. I put a drop in replacement K&N performance air filter in today and I seem to have less response from the throttle at cruising speed. I have yet to run each of the gears out and see how it feels. I know not to expect a noticable gain just from a replacement filter but I was hoping that the reason it seems more sluggish is because the computer needs to be reset. Does that happen automatically after so long or do I have to do something manually everytime I modify the car? I'm ready to throw the stock filter in.