notice any improvement in performance since the change? I'm trying to make my crossfire run like new. Parts are relatively affordable and easy to install, for the most part. Can someone chime in, does it make sense to change out 02 sensors if they are old or is this the kind of part you change once it stops working altogether?

I was going to change out the Camshaft Position Sensor also...... again.... because parts are cheap and mine has 145K miles on it.