Sometime when driving the S, I notice that the RPM's will dip down as if I am not on the clutch all the way. I am and it feels as if the car is going to stall. I have taken it to my work and they say that they can't tell it is doing anything wrong so they don't really help any. And I notice that when I put in into 1st going maybe 3 MPH I feel like a clunk. Or will hear something like a clunk. Hard to explain, but that too my work denies anything wrong.

 

Engine clunk is normal. Don't worry about it.

The revs might fix by tapping the map sensor with the back of a screw driver.

 

munkee is correct, tap that map sensor. It's a black sensor located on the top of the throttle body. You can't miss it.