Hi guys i been have an a little issue that would happen once a week but now has become a big annoyance, for about 2 weeks now my car has been feeling really "held back" or "restrained" every time i hit the throttle its almost like i have to hit Vtec to even feel a slight gain in power. I have changed oil recently, changed spark plugs, use premium gas. I have also started smelling a lot more exhaust fumes when driving with windows down and black spots on rear bumper right around exhaust area which from what i have read i might be running to rich? I don"t have CEL on. My dad told me to check if the O2 sensor might be done or my cat is clogged,but i have not had time to check that yet, but will soon. Also i notice that my RPM's jump very dramatically from time to time around 4000 RPM. I know what you guys are going to say...Its your clutch, but it does it when i rev the engine up and don't have it in gear...lol. Its almost like something electrical is touching the RPM wire and making it jump around. Will go from 3000RPM to 7000RPM on the cluster but the engine still feels like its revving normal. I'm not sure if you guys understand what i'm trying to say, Mechanically the car revs fine but the cluster says its not............lol if i put it in different perspective my 1995 honda Civic DX sedan can probably smoke my lude right now buy a lot feel my pain?.................lol its 1997 Base.