I just installed a K&N air intake model 63-1017 its a high performance aircharger...supposed to be for off roading but it fits my 94 civic ex coupe. Problem is now I've noticed my idle is lower and not sure if vtech is kicking in...I cant hear it over the intake sucking in air. Also I was never really sure if the vtech was ever kicking in cause I dont know what it was supposed to sound like and I have always had kind of crappy gas milage for a honda. After installing the intake it seems to be worse. Its probably just from me slamming my foot on the pedal but still I should be seeing some improvments shouldnt I? I've just been noticing a lot of weird things about my civic that I'm not sure if I should worry about or not. I feel like my gauges are lying to me sometimes. My gas gauge says I'm almost out of gas but when I pull into the gas station it goes up a 1/4 of the way. I notice it says its low on gas when I still have about 2 gallons left. Sorry for the rambling but I would just like to be counsolued on all this stuff make sure I'm not going crazy.