I got a cut out for sale that is basically a bolt-on mod. No cel's or such.

 

is your cutout cable driven or electric?
where do you have it mounted, after or before the cat?
How do you like the sound?
pics or vid?

 

electric. it replaces the cat. Sounds ehh out of vtec. Screams when in it. I probably drove about 80% if the time with it open. I dont have any vids of mine but just search "s2000 open header" on youtube and it should give you a good idea. The for sale link is in my sig.

 

If you replace the cat with that, how did you not get a cel?

 

The test pipe has the 02 sensor moved far enough away from the exhaust that it is happy.