I am currently in the process of installing headers in my 96 Z. I have a set of Pacesetter coated long tubes, Pacesetter ORY, and flat O2 24" extensions. I have everything removed from the car that needs to be for the headers to go on. There are 4 O2 sensors, there are only places for 2 on the headers. What do I do with the other two?

 

You can get O2 sims for them, get them tuned out (this is what I did) or just deal with the SES light - they don't affect how the car runs. IIRC they just make sure your cats are good.

 

Alright, thanks...that is what I was hoping to hear. I plan on getting a tune on a dyno soon. About how much does a dyno tune run?