leeines

I have a '91 CRX with a B16 A transplant, lots of aftermarket mods in addition.
It has a Skunk 2 power master exhaust with RC header. I would like a quieter muffler. Does anyone know another low back pressure system with a quieter muffler?
My O2 sensor is not hooked up and I do not see where to hook it up. It idles roughly when cold. I suspect that the O2 sensor is one reason. Any one out there to guide me?
I live in Sierra Vista, AZ. Anyone know of a shop here or Tucson that can tune my Hondata ECU system that has a dyno available?
Thanks,
Lee

Gawear

My hatchback has aftermarket no name cat back and the O2 isn't hooked up....runs just fine