btw guys, update: i installed my denso iradiums Ik-16s and changed my oil. car is starting to feel better. all thats left now is change the cat, and maybe the O2 sensor on it. i already changed the O2 on the header, cuz my mechanic is an idiot, it wasnt messed up i know, i thought he changed the O2 on the cat!!! $250 went down the hole. =(